S. Bob invested a certain amount of monev in a retirement account with an annual interest rate of 7.2%
compounded weekly. After 5 years, the balance in his account reached
$2,500.
a. Write an equation that models Bob's investment showing how much money will be in his retirement
account.
b. What was the amount of the initial investment?
c. What will the account balance be after 15 years?
