Write an expression for 7 divided by c

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Having a hard time understanding this question (see attachment).

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?