you have reached an agreement with an auto dealer regarding a new car. She has offered you a trade-in allowance of $7 000 on your old car for a new one that she has reluctantly reduced to only $32 000 (before trade-in). She has further agreed upon a contract that requires you to pay $543.56 each of the next 60 months, beginning one month from today. What is your interest rate, expressed as an annual percentage? Give your answer to the nearest 0.01%. With your instructors approval, write a computer program or use a spreadsheet to solve the problem.