You can buy 3 apples at the quick market for $1.05 .you can buy 5 of the same apples at stop and save for $1.00 . which is the better buy

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?