Algebra 2

Part C: Medicine Graph Analysis

  • Graph Analysis: The graph represents the function m, displaying the amount of medicine in the body, measured in milligrams, as a function of time (in hours).
      - Estimated Value: To estimate m(0.5):
        - Analyze the graph at the point corresponding to 0.5 hours.

  • Time of Administration: Medicine is administered at noon. To estimate the amount at 4:30 PM:
      - Calculate the elapsed time from noon to 4:30 PM, which is 4.5 hours.
      - Use the graph to find m(4.5) by locating the corresponding point on the graph.

  • Decrease Factor Calculation:
      - First Hour: Calculate the factor by which the medicine amount decreased over the first hour (from 0 to 1 hour).
        - Locate m(0) and m(1) on the graph.
        - Compute the decrease factor as:
          Decrease factor=m(0)m(1)\text{Decrease factor} = \frac{m(0)}{m(1)}
     
      - First 1.5 Hours: Calculate the factor of decrease from 0 hours to 1.5 hours.
        - Find m(1.5) on the graph.
        - Compute the decrease factor as:
          Decrease factor=m(0)m(1.5)\text{Decrease factor} = \frac{m(0)}{m(1.5)}

Part 13: Subscriber Growth Function

  • Function Representation: The equation f(x)=1.3xf(x) = 1.3^x represents the number of subscribers (in thousands) an influencer has after tracking for x months.
      - Subscriber Metrics: The function suggests exponential growth based on time.

  • True Statements Validation:
      - Statement g: log35000\log_3{5000} indicates how many months it will take for the influencer to reach 500,000 subscribers.
      - Statement h: The graph suggests that the approximate value of log3700\log_3{700} is around 6.
      - Statement i: log3y\log_3{y} accurately represents a logarithmic form related to the function f(x).
      - Statement j: The influencer is projected to reach 100,000 subscribers shortly after 5 years (60 months).
      - Statement k: Indicates that 5.4 is a reasonable approximation for log3400\log_3{400} based on the graph.

Part 14: Insect Population Growth Analysis

  • Graph Overview: A graph demonstrating insect population growth over several years, with key coordinates given.
      - Coordinate Points:
        - Point A: (1, 3)
        - Point C: (4, 40)

  • Growth Factor Calculation:
      - Over 3 Years: Determine the increase factor from year 1 (3 insects) to year 4 (40 insects):
        - Calculate by setting up:
          Increase Factor=403\text{Increase Factor} = \frac{40}{3}
       
      - Annual Change: Calculate the rate of change over one year (average):
        - Find the population at years 1 and 4, then divide the total increase over three years by 3 to find the approximate annual increase.
        - Establish the annual change as follows:
          Annual Change=40341\text{Annual Change} = \frac{40 - 3}{4 - 1}

  • Equation Creation:
      - Growth Equation: Develop an equation for population growth per year, which could be modeled as exponential growth. A possible form might be:
        - P(t)=P0ertP(t) = P_0 e^{rt} where:
          - P(t)P(t) is the population at time t,
          - P0P_0 is the initial population,
          - rr is the growth rate,
          - tt is time in years.