A₁
27. You invest an amount of money in mutual fund. After four years, the balance of your account is $1669.34
and after ten years, it is $2,576.29. If the amount of money that is in your account is said to be growing
exponentially, write a function that describes the amount of money in your mutual fund for time t. Then find
the value of the mutual fund after 15 years. (Hint: think y = ab*).