10. An installment contract for the purchase of a car requires payments of $312 99 at the end of each month for 3.25 years. Interest is 7% per annum compounded monthly (a) What is the amount financed? (b) How much is the interest cost? (a) The amount financed is $ __ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (b) The interest is $__ (Round the final answer to the nearest cent as needed. Round a ll intermediate values to six decimal places as needed.)