Zeki's course at a trade school cost $1,500. the school gave him a loan for the full amount at an interest rate of 23%. the school expects a payment of $123.00 every month for 15 months. how much interest will zeki have paid when the loan balance is $0?

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?