Diane plans to purchase a new work truck. The dealer requires a 20% down payment on the $31,000 vehicle. Diane will finance the rest of the cost with a fixed-rate amortized auto loan at 9.5% annual interest with monthly payments over 6 years. Complete the parts below. Do not round any intermediate computations. Round your final answers to the nearest cent if necessary. If necessary, refer to the list of financial formulas. s ? (a) Find the required down payment. $ (b) Find the amount of the auto loan. $ (c) Find the monthly payment. $