Brianna invests a sum of money in a savings account with an annual interest rate of 5.21% compounded
monthly. After 5 years, the balance reaches $4, 538.97.
3. Write an equation that models Brianna's investment showing how much money, A, in dollars will be in her
account in t years.
4. What was the amount of the initial investment?
5. What will the account balance be after 15 years?