TEAS 7 science exam

The following diagram summarizes the carbonic acid-bicarbonate ion buffer system of the blood.
CO2 + H20 < \> H2CO3 < \> HCO3- + H+

Which of the following equations show the reaction that takes place when there are excessive protons (H+) in the blood?
A. H2CO3 --\> CO2 + H20
B. CO2 + H20 --\> H2CO3
C. HCO3- + H+ --\> H2CO3
D. H2CO3 --\> HCO3- + H+

C. HCO3- + H+ --\> H2CO3

The following diagram summarizes the carbonic acid-bicarbonate ion buffer system of the blood.
CO2 + H20 < \> H2CO3 < \> HCO3- + H+

Which of the following equations show the reaction that takes place when there are very little protons (H+) in the blood?
A. H2CO3 --\> CO2 + H20
B. CO2 + H20 --\> H2CO3
C. HCO3- + H+ --\> H2CO3
D. H2CO3 --\> HCO3- + H+

D. H2CO3 --\> HCO3- + H+

which of the following describes the process by which solid carbon dioxide (dry ice) turns directly into carbon dioxide gas?
A. Evaporation
B. Sublimation
C. Deposition
D. Condensation

B. Sublimation

which of the following describes why water has a concave, or
downward-curving, meniscus when poured in a glass beaker?
A. The adhesive forces with the glass are greater than the cohesive forces.
B. Glass has a higher density than water.
C. Water has a higher density than glass.
D. A. The cohesive forces with the glass are greater than the adhesive forces.

A. The adhesive forces with the glass are greater than the cohesive forces.
concave meniscus is when molecules are attracted more to the container then themselves \= adhesive forces \= downward curving
concave meniscus is when molecules are attracted more to each other then the container \= cohesive forces \= upward curving

Which of the following actions does a hydrophilic hormone take to activate a target cell?
A. The hormone binds to cell-surface receptors of the target cell.
B. The hormone passes through the plasma membrane of a target cell.
C. The hormone binds to a cytosolic receptor in the target cell.
D. The hormone enters a target cell through a transport protein.

A. The hormone binds to cell-surface receptors of the target cell.
hydrophilic \= water loving hormones can just bind to the receptors on the outside of the cell which that binding can change the permeability of the cell making it more open to activate this target cell (usually its a second messenger system). This is action is when the endocrine system sends hormones to target cells.

Which of the following best describes adaptive immunity?
A. The initiation of internal defenses, such as phagocytes and natural killer cells.
B. The body's barrier defenses, such as mucous membranes and secretions.
C. A response to specific traits of specific pathogens
D. The initation of the inflammatory response.

C. A response to specific traits of specific pathogens
adaptive immunity \= specific and targeted
immune immunity \= nonspecific and general
(the other three are innate immunity)

Permanent damage to which of the following types of tissues in the spinal cord will cause paralysis?
A. Bone tissue
B. Nervous tissue
C. Muscle tissue
D. Connective tissue

B. Nervous tissue
nervous system is all about messages so if you cant send messages you cant move your muscles since they need the command from the nervous system

Which of the following describes the function of tendons?
A. Tendons attach two bones.
B. Tendons attach bones to ligaments.
C. Tendons attach skeletal muscles to ligaments.
D. Tendons attach skeletal muscles to bones.

D. Tendons attach skeletal muscles to bones.
ligaments is bone to bone

Which of the following is used to indicate mass?
A. mg
B. μm
C. cm^3
D. mL

A. mg
μm \= length
cm^3 \= volume
mL \= volume

Histones are proteins associated with which of the following?
A. Sperm cells
B. Blood
C. DNA
D. Hair follicles

C. DNA
condenses the DNA into chromatin

The shortening of a sacromere in skeletal muscle is directly due to the interaction of which of the following?
A. Acetylcholine and acetylcholinesterase
B. Dynein and Kinesine
C. Pepsin and pepsinogen
D. Myosin and Actin

D. Myosin and Actin

Which of the following bases is found in RNA but is absent from DNA?
A. Adenine
B. Uracil
C. Cytosine
D. Thymine

B. Uracil

Which of the following occurs during inhalation?
A. The volume of the thoracic cavity decreases.
B. Air moves from areas of low pressure to areas of high pressure.
C. The ribcage lowers.
D. The diaphragm moves downward.

D. The diaphragm moves downward.
at the same time the ribs move upward and when the thoracic cavity volume increases then pressure decreases so air moves from high to low

When an ionic salt dissolves in water, the ions CO3^2- and K^+ are formed. Which of the following is the formula for the salt?
A. K3CO2
B. KCO3
C. K(CO3)2
D. K2CO3

D. K2CO3
CO3 HAS A NEGATIVE 2 CHARGE \= meaning two more electrons then protons
K^+ HAS A POSTIVE 1 CHARGE \= meaning it has one more proton then electrons and is missing one electron
to make this a neutral salt you need two K ions for every one carbonate ion (CO3)

K2CO3 +H2O \= K+(aq) + CO3^2-(aq)

A mutation of a portion of a DNA molecule changed the resulting mRNA sequence from AUU-GGG-UUC to CUU-GGG-UUC. Using the table, predict the resulting amino acid sequence.
A. From Met-Gly-Leu to Leu-Gly-Phe
B. From Leu-Gly-Phe to Met-Gly-Leu
C. From lle-Gly-Ser to Leu-Gly-Phe
D. From lle-Gly-Phe to Leu-Gly-Phe

D. From lle-Gly-Phe to Leu-Gly-Phe

Which of the following statements correctly describes the change in coat coloring of an Arctic fox from brown in summer to white in winter?
A. The fox's phenotype changes, but the genotype does not.
B. Neither the phenotype nor the genotype of the fox changes.
C. The fox's genotype changes, but the phenotype does not.
D. Both the phenotype and genotype of the fox changes.

A. The fox's phenotype changes, but the genotype does not.
Genotypes can never change you either have it or dont
but phenotypic plasticity means that a genotype can make different variations of phenotypes depending on the environmental conditions

Which of the following structures is a flap of cartilage that prevents the movement of food into the trachea?
A. Glottis
B. Pharynx
C. Epiglottis
D. Larynx

C. Epiglottis

If a portion of a strand of DNA bases read 5' AGCTAGCGT 3', what would the sequence of bases on the complementary strand read?
A. 5' TCGUTCGCU 3'
B. 5' UCGAUCGCA 3'
C. 3' AGCTAGCGT 5'
D. 3' TCGATCGCA 5'

D. 3' TCGATCGCA 5'
complementary is DNA to DNA (so A\=T , T\=A, C\=G, G\=C) also its 3' to 5' for a 5' to 3' prime DNA

if its DNA to RNA then replace any A with U as the complementary RNA also its 3' to 5' for a 5' to 3' prime DNA

How many times larger is the volume of a cube that is 4 mm on all sides compared to the volume of a cube that is 2 mm on all sides (Round the answer to the nearest whole number)

volume of a cube is side times side times side or side^3
4 times 4 times 4 or 4^3 \= 64 mm^3
2 times 2 times 2 or 2^3 \= 8 mm^3

64/8 \= 8 so the volume of a 4mm cube is 8 times larger then the volume of a 2mm cube
8 times is the answer

Which of the following is a weakness of a correlational study?
A. Cannot be replicated.
B. Inability to control independent variables.
C. Too many variables to control.
D. Cannot determine causation.

D. Cannot determine causation.
Just because two things happen together doesn't imply that one is causing the other

A scientist predicts that germinating beans will use more oxygen than non-germinating beans. This prediction is referred to as which of the following?
A. an observation
B. data collection
C. a conclusion
D. a hypothesis

D. a hypothesis

Which of the following is a property of water?
A. Water requires less heat than ethanol to raise its temperature.
B. Solid water is more dense than liquid water.
C. Water dissolves polar and ionic compounds.
D. Water is made up of one molecule of hydrogen and two molecules of oxygen.

C. Water dissolves polar and ionic compounds.
Water requires MORE heat than ethanol to raise its temperature.
Solid water (ice) is LESS dense than liquid water.
Water is made up of two molecules of hydrogen and one molecule of oxygen.

Which of the following elements has the smallest atomic radius?
A. C
B. Ge
C. Si
D. Sn

The atomic radius of a chemical element is a measure of the size of its atom, usually the mean or typical distance from the center of the nucleus to the outermost isolated electron.

Atomic Radius increases the more left and down
Sn is largest atomic radius

A. C is correct answer its the smallest atomic radius

Which of the following is the function of a catalyst?
A. To increase the rate of a reaction
B. To convert a nonspontaneous reaction to a spontaneous reaction
C. To increase the product yield
D. To increase the activation energy of a reaction

A. To increase the rate of a reaction
also it decreases the activation energy
it does not change the reaction or yield any more product

Which of the following is present in both prokaryotic and eukaryotic cells?
A. Chloroplast
B. Cell membrane
C. Golgi apparatus
D. Endoplasmic Reticulum

B. Cell membrane
prokaryotes have no membrane bound organelles so no golgi or ER
chloroplasts are only in plant cells not animal cells so only in plants which are only eukarotes

both do have a cell membrane

A cell is placed in a hypertonic solution. Which of the following describes the resulting osmosis?
A. There is a net flow of water out of the cell.
B. There is a net flow of water into the cell.
C. The net flow of water into and out of the cell is zero.
D. There is no flow of water.

A. There is a net flow of water out of the cell.
water can enter and exit the cell due to osmosis (a type of diffusion from high water area to low water area)
in hypertonic solution the inside of the cell is more salty compared too the environment meaning more water inside the cell compared to outside so water goes from high to low so from inside cell to outside

Which of the following terms describes the removal of metabolic waste from the body?
A. Excretion
B. Anabolism
C. Secretion
D. Catabolism

A. Excretion

Which of the following parts of the central nervous system releases chemicals that regulate the pituitary gland?
A. Spinal cord
B. Hypothalamus
C. Cerebellum
D. Thalamus

B. Hypothalamus

A researcher is gathering large amounts of data about patients who have a common disease and the effectiveness of various medications in comparison to placebos. Which of the following types of graphs is the best way for the researcher to represent data?
A. Bar graph
B. Flow chart
C. Line graph
D. Pie chart

A. Bar graph

when to use a line graph

best for displaying change

When to use a bar graph

different categories are being compared

when to use flowchart

To develop understanding of how a process is done.

To study a process for improvement.

To communicate to others how a process is done.

When better communication is needed between people involved with the same process.

To document a process.

When planning a project.

When to use a pie chart

comparing parts of a whole

Which of the following layers of skin contains glands and hair follicles?
A. Stratum corneum
B. Dermis
C. Hypodermis
D. Stratum lucidum

B. Dermis

Carbohydrates are composed of which of the following?
A. Monosaccharides
B. Amino acids
C. Nucleic acids
D. Isoprenoids

A. Monosaccharides

Identify the pathway of blood through the components of the cardiovascular system, starting with the blood entering the heart through the superior vena cava. (Move the options in the box on the right, placing them in selected order. Use all the options.)
Right Atrium
Lungs
Right Ventricle
Pulmonary valve
Pulmonary artery

Right Atrium
Right Ventricle
Pulmonary valve
Pulmonary artery
Lungs

Which of the following is an example of active transport?
A. Movement of sodium and potassium across the cell membrane against their concentration gradients.
B. Loss of water from a cell in a hypertonic solution.
C. Aquaporins in kidney cells that help concentrate urine.
D. Movement of a substance from an area of high concentration to an area of low concentration.

A. Movement of sodium and potassium across the cell membrane against their concentration gradients.
the rest are passive

A vasectomy is a procedure in which the vas deferens are cut. Which of the following describes why a vasectomy leads to infertility?
A. The vasectomy blocks the movement of sperm from a testis into the epididymis.
B. The vasectomy blocks the movement of sperm from the ejaculatory duct into the bulbourethral gland.
C. The vasectomy blocks the movement of sperm from the prostate gland to the bulbourethral gland.
D. The vasectomy blocks the movement of sperm from the epididymis to the urethra.

D. The vasectomy blocks the movement of sperm from the epididymis to the urethra.
(The sperms are produced in seminiferous tubules which are then matured and stored in epididymis. From epididymis it flows to vas deferns and then to urethra upon ejaculation)

Which of the following is true if Koch's postulates are met regarding a disease?
A. This disease is noninfectious
B. The disease is hereditary
C. The disease is caused by a microorganism
D. The disease is he result of a dietary deficiency

A. This disease is noninfectious
(Koch's postulates are four criteria designed to establish a causal relationship between a microbe and a disease)
1. The microorganism must be found in abundance in all organisms suffering from the disease, but should not be found in healthy organisms.
2. The microorganism must be isolated from a diseased organism and grown in pure culture.
3. The cultured microorganism should cause disease when introduced into a healthy organism.
4. The microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent.

Which of the following statements about COVID-19 vaccine initiation is supported by the data in the chart below?
A. The highest daily rate occurred in December.
B. The cumulative total fell by 2 million between January 9 and January 10.
C. The daily rate for December 29 and January 5 are similar.
D. The cumulative total for January is around 13 million.

C. The daily rate for December 29 and January 5 are similar.

A student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experiment as followers over a 2-month period, all with illumination at 1 meter distance from plants grown with the same soil and watering condition.
3 Arabidopsis plants exposed to ultraviolet light(uv)
3 Arabidopsis plants exposed to infared light (IR)
3 Arabidopsis plants exposed to white light
at the end of the experiment, she first finds that The IR treated plants, are scorched, the uv treated plants have wilted, but the white light-treated plants are growing normally.
Which of the following statements is most likely correct?
a) Three plants do not provide sufficient replications to draw a conclusion.
b) The wavelength of light does not affect photosynthesis
c) Infrared light contains more energy than other wavelength
d) Wavelength of light is the only variable that has been changed between groups

d) Wavelength of light is the only variable that has been changed between groups

In the image above, identical genes (A and B) flank the tet^R gene on Plasmid 1 and the amp^R gene on Plasmid 2. If these two Plasmids successfully exchange genes between regions A and B, which of the following gene combinations is possible on the same plasmid?
A. kan^R + amp^R
B. kan^R + tet^R
C. chl^R + tet^R
D. chl^R + kan^R

B. kan^R + tet^R

Mutations in which of the following types of cells can be inherited by offspring?
A. Endocrine
B. Neural
C. Muscle
D. Ovarian

D. Ovarian
The offspring received the DNA only from the mother's ovarian germ cells and father's testicular germ cells. Hence only ovarian mutation will result into inheritance.

Carbon has an atomic number of 6. Which of the following is true about the isotope C-12?
A. C-12 possess 7 protons and 5 neutrons in its nucleus.
B. C-12 possess 6 neutrons and 6 protons in its nucleus.
C. C-12 possess 7 neutrons and 5 electrons in its nucleus.
D. C-12 possess 6 protons and 6 electrons in its nucleus.

B. C-12 possess 6 neutrons and 6 protons in its nucleus.

During muscle contraction, myosin is directly responsible for which of the following?
A. Initiating an action potential along the sarcolemma.
B. Forming cross-bridges with actin molecules.
C. Binding to troponin molecules.
D. Releasing calcium from the sarcoplasmic reticulum.

B. Forming cross-bridges with actin molecules.
During muscle contraction, myosin is directly responsible for forming cross bridges with actin molecules.Cross bridge formation and breaking help in contraction and relaxation of muscles.

A researcher collects high-resolution photographs of the Earth taken from outer space at annual intervals for the last decade. This data would be most useful to analyze which of the following?
A. Deforestation in the rainforest
B. Human movement during crisis
C. Weather patterns during hurricanes
D. Migration patterns of large whales

A. Deforestation in the rainforest

Deforestation is the process of removing large areas of trees, and its primary causes are increased agriculture, wood harvesting, and the construction of new roads and other infrastructure. By engaging in logging, farming, mining, and dam construction, humans can contribute to deforestation. One can see deforestation via satellite because it gives a sharper picture of forest disturbances and can monitor deforestation in different areas.


Option b is wrong since the population's mobility may be decreased during times of crisis when human movements may be curtailed to stop the spread of disease. People are not visible from space since they are unable to walk through the vast regions on Earth during the crisis.
Option c is wrong since a hurricane is a type of tropical cyclone that arises over tropical or subtropical seas and rotates quickly. Rainfall from a typical hurricane might range from 6 inches to a foot. Hurricanes can be observed from space, and the rotation of the earth also has an impact on this process because the Coriolis effect causes the wind to move in a spiral pattern rather than in a straight line. This results in the easily recognizable spiraling cloud system that can be seen in satellite photos, but the weather pattern cannot be distinguished because of the continuous movement of the clouds.
Option d is wrong since, during the summer, whales migrate toward the colder poles, and during the winter, they move toward the warmer waters of the equator. Since whales spend most of their time submerged, it is impossible to see their migration.

Because there are fewer trees because of deforestation, more carbon dioxide builds up in the atmosphere. Global warming is caused by the atmosphere's excess carbon dioxide, which traps heat rays that the earth reflects.
Therefore, deforestation can be measured in a variety of ways in the modern world. For instance, researchers can utilize LiDAR or satellite photography to spot changes in global forest growth and density.

Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
A. Urea
B. Lysozymes
C. Water
D. Sebum

A. Urea
Primary function of sweat glands is to maintain our body temperature during hot period by the process of perspiration/sweating.

Now, in our body when proteins are broken down a significant amount of ammonia is produced. These ammonia are toxic for our body so these are converted into urea, which are mainly excreted by kidneys.

But some amount of urea is also excreted by sweat glands in the process of perspiration.

Which of the following body systems develop from the same origin tissues as lungs?
A. Musculoskeletal system
B. Neuromuscular system
C. Gastrointestinal system
D. Genitourinary system

C. Gastrointestinal system

LUNGS or the respiratory system is developed from the endoderm layer of the 3 germ layers.
Gastrointestinal system is also formed from the endoderm layer.
Whereas, genitourinary system is formed from the mesoderm.
Nervous System is formed from ectoderm.
Musculoskeletal System is formed from the mesodermal layer.
Hence the answer is gastrointestinal System.

Which of the following pancreatic secretions digests starch into disaccharides?
A. Amylase
B. Chymotrypsin
C. Trypsin
D. Lipase

A. Amylase

1. Proteolytic enzymes are:
Trypsin
Chymotrypsin
Carboxypeptidases
Nucleases
Elastases
Collagenase
2. Lipolytic enzymes are:
Pancreatic lipase
Cholesterol ester hydrolase
Phospholipase A
Phospholipase B
Co lipase
Bile salt- activated lipase
3. Amylolytic enzyme:
Pancreatic amylase
Digestion of carbohydrates:
Like, salivary amylase, the pancreatic amylase also converts starch into dextrin and maltose.
Dextrin and maltose are the disaccharides.
Therefore, pancreatic amylase is the enzyme of pancreatic juice that digests starch into disaccharides.

Which of the following vessels is responsible for carrying blood from the upper body to the right atrium of the heart?
A. Aorta
B. Pulmonary arteries
C. Pulmonary veins
D. Superior vena cava

D. Superior vena cava

An equal mass of which of the following states of matter could completely fill either a 100ml or 500ml container?
A. Gas
B. Liquid
C. Solid
D. Mixture

A. Gas
If we take equal mass of gas in 2 different sized containers, it completely fill the container irrespective of the mass. It is a characteristic feature of gases.
According to Boyle's law, pressure of an ideal gas is inversely proportional to volume.
P1V1 \= P2V2
For the same mass of gas, vessel with higher volume will contain the gas a lower pressure.
Fluid and solid do not obey ideal gas laws.
**Liquid doesn't have definite size or shape. It acquires the shape of the vessel it's contained.It does not fill completely in the container.
\** Solid has definite size and shape and they are highly compressible.

Which of the following body cavities is subdivided into the thoracic and abdominopelvic cavities?
A. Dorsal
B. Ventral
C. Vertebral
D. Cranial

B. Ventral

Lifelong protection after exposure to a virus such as chickenpox is due to which of the following types of immunity?
A. Transplantation
B. Active
C. Innate
D. Nonspecific

B. Active

Which of the following is part of the pulmonary circuit?
A. Bronchial artery
B. Aorta
C. Superior vena cava
D. Pulmonary vein

D. Pulmonary vein

Which of the following processes cause most of the carbon dioxide from the blood to move to the alveoli?
A. Conversion to carbon monoxide
B. Diffusion down a concentration gradient
C. Passive transport using carrier proteins
D. Active transport using energy

B. Diffusion down a concentration gradient

Which of the following is the value of x in the equation below?
4x-3-5x \= 24
A. -27
B. 3
C. 21
D. -6

A. -27
4x-3-5x\=24
-3-1x\=24
-1x\=27
x\=-27

A patient drives 19 miles one way to medical facility for treatment. How far does the patient drive round trip in 22 days of treatment?
A. 418 miles
B. 1,254 miles
C. 1,672 miles
D. 836 miles

19 miles one way
19 miles back
19+19 \= 38 miles round trip
38 miles times 22 days \= 836 miles

Which of the following is the correct conversion of 2 3/4 yards into inches?
A. 11 inches
B. 99 inches
C. 33 inches
D. 75 inches

B. 99 inches
1 yd \= 36 inches or 1 in \= 0.0278 yd
1 in /x \= 0.0278 yd/2.75 yd (cross multiply)
x \= 99 inches

an athlete can run 6 miles in 51 mins. At this rate, how many miles could the athlete run in 90 mins?
A. 10.6 miles
B. 45 miles
C. 11.5 miles
D. 15 miles

A. 10.6 miles
6 miles/51 mins \= x/90 mins (cross multiply)
x\= 10.6 miles

A local law school reports that 74% of last year's graduates are employed by law firms, 3% work for the government, and 2% work for nonprofit organizations. The rest of the graduates work at jobs unrelated to law. based on these outcomes, which of the following is the percentage of graduates working job unrelated to Law?

a. 79%
b. 69%
c. 21%
d. 5%

c. 21%
74 +3 +2 \=79% working for law
100-79 \= 21% not working in law

four hundred milligrams is equal to how many grams?
A. 0.4g
B. 400,000g
C. 0.00004g
D. 4g

A. 0.4g
1 gram \= 1000mg
1g/x \= 1000mg/400mg (cross multiply)
x\=0.4g

(18x^5yz) /(6xyz^4)
Simplify the expression above. Which of the following is correct?
A. (3x^4)/z^3
B. (3x^4y)/z^3
C. 3x^4z^3
D. 3x^4yz^3

A. (3x^4)/z^3
(18x^5yz) /(6xyz^4)
\=3 x4 (y becomes 0 since y^1 -y^1 \= 0) z^1 -z^4 \= z^-3 or 1/z^3
3x^4z^-3 or (3x^4)/z^-3

The hypotenuse (side C) of a triangle is 13 inches long. Which of the following pairs of measurements could be correct for the lengths of the other two sides of the triangle? ( Note: A² + B² \= C²)

A. 2.5 inches,4 inches
B. 2.5 inches, 6 inches
C. 5inches, 8 inches
D. 5inches, 12 inches

D. 5inches, 12 inches
a^2 + b^2 \= c^2
5^2 + 12^2\= 13^2
25+144\=169
169\=169

Pat deposits $600 in a savings account at a simple interest rate of 6 % per year for 5 years . how much will pat have earned in interest by the end of 5 years?
A. $95
B. $180
C. $360
D. $36

B. $180
$600 times 6% (0.06) \= 36 in 1 year
36 times 5 years \= $180 interest in 5 years

The width of a rectangle is 4 inches ( in ) and the area of the rectangle is 32 in² , which of the following represents the length of the rectangle ?
A. 36 in
B. 8 in
C. 28 in
D. 128 in

B. 8 in
Area of a rectangle \= Length times Width
32 in^2 \= L times 4 in
divide by 4
32/4 \= 8 in \= length

Arrange the following in order from the greatest to least .
265/100
20 %
270 %
2.6

270%, 265/100. 2.6, 20%

265/100 \= 2.65
20% \=0.2
270% \= 2.7
2.6

An employee discovers that 0.0025 of all products predicted at his factory contain defects, which of the following % does this represent?
A. 2.5%
B. 0.25%
C. 25%
D. 0.025%

B. 0.25%
0.0025 D2P move decimal two places to the right so 0.25%

Which of the following is the mean of the set of data below?

30, 29, 28, 30, 24, 12, 26, 33, 25, 23

A. 26
B. 27
C. 21
D. 30

A. 26

30 + 29 + 28 + 30 + 24 + 12 + 26 + 33 + 25 + 23 \= 260 divided by 10 (10 total numbers) \= 26

A garden in the shape of a square has an area of 13 square feet . Each side of the garden has a length of √13 feet . Which of the following is the decimal approximation for the length of each side?
A. 3.6 feet
B. 4.5 feet
C. 6.5 feet
D. 2.6 feet

A. 3.6 feet
√13 \=3.6

A pudding recipe for 50 people calls for 4 cups of sugar . Each bag of sugar contains 6 cups . How many bags of sugar will be needed to make this recipe for 300 people ?
A. 4 bags
B. 24 bags
C. 13 bags
D. 8 bags

A. 4 bags
50 people /4 cups \= 300 people/ x(cross multiply) \= 24 cups
then,
1 bag/6 cups \= x/24 cups (cross multiply) \= 4 bags for 300 people

To determine the insurance premium of a car , an insurance company considers the following determinants the age of the car , the model of the car , and mileage of the car . Which of following is the dependent variable ?
A. Age
B. Insurance premium
C. Model
D. Mileage

B. Insurance premium
this is the variable that responds to the changes in the age, model, and mileage

Which of the following is the correct order of the numbers below from the least to greatest ?

-271.906 , -193.823 , 145.884 , 235.971

A. -271.906, -193.823 , 145.884 , 235.971
B. 145.884 , -193.823, 235.971, -271.906
C. -271.906, 235.971, -193.823, 145.884
D. -193.823, -271.906, 145.884, 235.971

A. -271.906, -193.823 , 145.884 , 235.971

The table below shows the miles driven as a function of gallons of gas used. When the function is graphed, what does the ordered pair (6, 144) represent?

Gallons of Gas Miles Drives
2 48
5 120
8 192

A. The driver can go 144 miles with 6 gallons of gas.
B. The driver can go 6 miles with 144 gallons of gas.
C. The driver can go 144 miles in 6 hours.
D. TheThe driver can go 24 hours in 1 mile.

B. The driver can go 144 miles with 6 gallons of gas.
Typically the point on the graph represents the value of the function when the input is
Since in our case, the function graphed is the number of miles driven as a function of gallons used, we can say that the point represents the fact that when gallons of fuel is used, the car can be driven upto miles

7x - 6 \= 3x -26
Solve the equation for X. Which of the following is the value of X?
A. -5
B. 8
C. -8
D. 5

A. -5
7x - 6 \= 3x -26
7x \= 3x -20
4x \= -20
x\=-5

For a school's annual budget, the total amount of money spent on supplies (s) and textbooks (t) cannot exceed $12,000. Which of the following inequalities accurately represents this scenario?
A. s + t ≥ $12,000
B. s + t ≤ $12,000
C. s + t \> $12,000
D. s + t < $12,000

B. s + t ≤ $12,000

What is the area of a square that measures 3.1 m on each side ?
A. 9.1 m^2
B. 12.4 m^2
C. 6.2 m^2
D. 9.61 m^2

D. 9.61 m^2
Area of a square is side tmes side and all sides are the same length so it can also be side ^2 so
(3.1 m)^2 \= 9.61 m^2

If the trend in the graph above continues, which of the following is the best estimate of the average price of a home in 2016?
A. $140,000
B. 125,000
C. 155,000
D. 120,000
(graph on page 11 of study guide document)

A. $140,000

To rent tablecloths from a party rental vendor, there is an initial charge of $40. There is an additional charge of $5 per circular tablecloth (c) and $3.50 per rectangular tablecloth (r), which of the following represents the total cost (T) to rent tablecloths?
A. 5r + 3.5c + 40 \= T
B. 5c + 3.5 r + 40 \= T
C. 5r + 3.5c - 40 \= T
D. 5c + 3.5 r - 40 \= T

B. 5c + 3.5 r + 40 \= T

A farmer needs to buy fertilizer for his farmland. The instructions on the fertilizer say 49.5 pounds of fertilizer is needed for 1 acre of land. The farmer buys 2,000 pounds of fertilizer.

What is the approximate number of acres he can cover with the fertilizer he bought?
A. 125
B. 1000
C. 300
D. 40

D. 40
49.5 pounds / 1 acre \= 2,000 pounds / x (cross multiply) \=
40 acres

A family is planning a driving vacation and is estimating the cost of gasoline . While on vacation , the family plans to drive 3,000 miles . The car goes about 25 miles per gallon , and the cost of gasoline is $ 1.66 per gallon . Which of the following is the estimate for the cost if the gasoline for gasoline for the vacation ?
A. $72.29
B. $199.20
C. $41.50
D. $120.00

B. $199.20
3,000 miles / x \= 25 miles / 1 gallon (cross multiply) \= 120 gallons
$1.66/1 gallon \= x/120 gallons (cross multiply) \= 199.2

A girl and her dog are playing tug of war with a piece of rope . The girl pulls on the rope with a force of 165 newtons ( N ) towards the east . The dog pulls with a force of 190 N toward the west . What is the net force on the rope?
A. 25 N towards the west
B. 35 N towards the east
C. 190 N towards the west
D. 165 N towards the east

A. 25 N towards the west
190-165 \= 25 and more towards west since 190 is west

What is the product of 5/8 x 18/4 (Round the answer to the nearest ten thousandths)

2.8125
5/8 \= 0.625
18/4 \= 4.5
0.625 times 4.5 \= 2.8125

Four friends are sharing a pizza . One friend eats half of the pizza . The other three equally divide the rest among themselves . What portion of the pizza did each of the three friends receive ?
A. 1/3
B. 1/4
C. 1/6
D. 1/5

C. 1/6
1 - 1/2 \= 1/2 left after one friend eats the half
1/2 divided by 3 \= 1/2 divided by 3/1 \= 1/2 multiplied by 1/3 \= 1/6 shared by the friends

A survey of 500 teenagers was taken to see which sport was their favorite to watch on television. The pie chart above displays the results. which of the following data sets (number of teenagers) was used to develop the pie chart?
A. basketball, 120; football 190; hockey 80; soccer, 90; other 20
B. basketball 240; football 380; hockey 160; soccer 180; other 40
C. basketball 120; football 190; hockey 90 soccer 80; other 20
D. basketball 190; football 120; hockey 90; soccer 80; other 20

(pie chart on page 15 of study guide document)

A. basketball, 120; football 190; hockey 80; soccer, 90; other 20

500 total
500 times 24% \= 120 basketball
500 times 38% \= 190 football
500 times 16% \= 80 hockey
500 times 18% \= 90 soccer
500 times 4% \= 20 other

The graph above compares the age of a car to its value. Which of the following is the age of the car when its value is $12,500?
A. Less than 1 year
B. Greater than 3 years
C. Between 2 to 3 years
D. Between 1 to 2 years
(pie chart on page 15 of study guide document)

B. Greater than 3 years

A lab scale weighs 3 pounds, 5 ounces. Which of the following is the scale's weight in (oz)?
A. 53 oz
B. 35 oz
C. 41 oz
D. 29 oz

A. 53 oz
1 pound \= 16 oz
3 Ib / 1 Ib \= x/16 oz (cross multiply) \= 48 oz
48 oz + 5 oz \= 53 oz

Which of the following values is the greatest?
A. 4.4
B. 10/3
C. 9/2
D. 4.25

C. 9/2
9/2 \= 4.5 is the greatest

Days Dollars
2 8
5 3
13 10
14 6
19 16
Using the table above, which of the following statements correctly describes the relationship between days and dollars?
A. There is no correlation between days and dollars
B. There is a negative correlation between days and dollars
C. There is a positive correlation between days and dollars
D. There is an inverse correlation between days and dollars

A. There is no correlation between days and dollars

A bakery sells three varieties of muffins . On a recent morning , the bakery sold 41 blueberry muffins , 27 bananas nut muffins and 20 bread muffins . Estimate the total number of muffins sold .

90
41 \= 40
27 \= 30
20 \= 20
40 + 30 +20 \= 90 estimated (actual is 88 which still rounds to 90)

A patient's temperature is recorded in degrees Fahrenheit every hour for 8 hr . the temperature in Fahrenheit were 99.0 , 99.2 , 98.7 , 99.3 , 99.7 , 98.6 , 100.0 , and 99.0 . What is the median temperature ?

99.1 * F
98.6 , 98.7, 99.0, 99.0, 99.2, 99.3, 99.7, 100
99.0 +99.2 \= 198.2
198.2 / 2 \= 99.1 is median

Which of the following is the appropriate estimate of 1 teaspoon ?
A. 5 mL
B. 30 mL
C. 6 mL
D. 1 mL

A. 5 mL

Singing is my favorite activity.
"Singing" functions as which of the following parts of speech in the sentence above?
A) Noun
B) Adjective
C) Adverb
D) Preposition

A) Noun

Noun \= person, place, thing, or object, or idea

Which of the following options is the correct spelling of the plural form of crisis?
A. Crises's
B. Crisises
C. Crisis's
D. Crises

B. Crisises

Which of the following sentences is written correctly?
A. "Were you late to the show," he asked?
B. "I have to leave!" she said.
C. "It's time to go home." I told him.
D. "Don't stay out too late," My mother said.

Which of the following transitional expressions should a student use to compare two ideas?
A. Therefore
B. Likewise
C. For instance
D. In addition

B. Likewise

Therefore- transition word for conclusion.
For instance- transition expression of coating example
In addition-often used to link multiple triats.

The top-secret blueprints were for an intergalactic spaceship. Which of the following is the meaning of the prefix "inter-"as used in the sentence above?
A.Past
B.Into
C.Among
D. Below

C.Among
prefix inter- means "among" (as in happening between two things). For example, International, interview, internet etc

"The skies are clear, and I predict no rain in the \__ future," the weather reporter announced.
A. foreseeable
B. forseeable
C. forseeible
D. foreseable

A. foreseeable

surely, he thought, I can't trust this enticing yet dubious offer, although I could use the opportunity more than I'd like. which of the following parts of speech is the word "although".
A) conjunction B) interjection C) participle D) adverb

A) conjunction

Conjunction is a word that connects two clauses or sentences or coordinates words in the same clause. The word, "although" is used as a conjunction as it is joining;
I can't trust this enticing yet dubious offer
I could use the opportunity more than I'd like.

Which of the following sentences contains formal language, rather than informal language?
A. If you can't take the heat get out of the kitchen.
B. The blue-footed bobby is a magnificent specimen.
C. I didn't want to tell on my friends, but the teacher gave me no choice.
D. When traveling alone, be on the the lookout for pick-pockets.

B. The blue-footed bobby is a magnificent specimen.

According to the prefix "in-" which of the following words defines "incredulous"?
A. Convinced
B. Disbelieving
C. Weary
D. Sympathetic

B. Disbelieving