harmaine wants to buy a new house but needs money for the down payment. Her parents agree to lend her money at an annuat rate of 3%, charged as simple nterest. They lend her $8000 for 3 years. She makes no payments except the one at the end of that time. inswer the following questions. If necessary, refer to the list of financial formulas. (a) How much total interest will Charmaine have to pay? (b) What will the total repayment amount be (including interest)