Math Review

#1) graph f(x) = 2/2x+2

#2) graph f(x) = -x/x+2

#3). Solve the inequality -u³ > -14u²+45u

#4) solve the inequality; x-5/x²-49 >0

#5) A vehicle purchased for $25000 depreciates at a constant rate of 5%. Determine the approximate value of the vehicle 12 years after purchase.

#6) $8000 is invested in a bank account at an interest rate of 9% per year. Find the account balance after 7 years if the interest is compounded:

A.) Annually

B.) Quarterly

C.) Monthly

D.) Continously

#7). Log(x)+log (x-210)=4

8). Solve: log_2 x² - log_2 (x+2) = 3

#9).

The half-life of Radium-226 is 1590 years. If a sample contains 200mg, how many mg will remain after 1000 years?

#10). If log_2(7x+5)=4, what is the value of x?

#11). Solve 9^{5x-5}=8^{10x-4}