800 3426 1848 2848 657 2336 735 Growth Rate = 29% Growth Rate = 4% Growth Rate = 7.5% Growth Rate = 103% Decay Rate = 19% Decay Rate = 5% Decay Rate = 0.2% || f(x): f(x) f(x)= f(x) f(x) f(x) = = = = = =

MAT150 Unit 3 Review **no need to show f(g(x)) = g(f(x)) = x Find f(x) for the following functions: 52) f(x) = (2x +1)5 53) Compound interest is cal culated using the formula below: A = P (1+12 Where A is the future value, P is present value, and t is the number of years for the loan/investment. a) If you invest $1,000 at 9% interest for 8 years, what is the future value of the investment? b) If you want to have $2,500 for a vacation in 3 years, how much should you invest today if you can get 10% on the investment? c) If you borrow $500 at 12% interest, how long will it take for the amount you owe to double?

A population numbers 17,000 organisms initially and grows by 5.3% each year. Suppose P represents population and t represents the number of years of growth. An exponential model for the population can be written in the form P = abt, where P =