Ineed to know what 12 + 5 - (6×24) equals

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?

Meee i honestly dont know what this question talking about

Write each rational number in the form a/b, where a and b are integers. 1. 5 1/6 2. -12