(5) 1. Do either (a) or (b): (a) The Austins purchase some new living room furniture with a total cash price of $5820. They make monthly payments for three years, with a finance charge of 21% on the cash price. Find the amount of the monthly payment (b) The Beavers purchase a new refrigerator. They agree to make 15 monthly payments, with a finance charge of $194. Use the Rule of 78 to find their finance charge refund if they pay in full after 9 payments. (5) 2. Do either (a) or (b): (a) The Carrs have a credit card that charges 18% interest on the average daily balance. The most recent billing cycle had 31 days. For 8 days their balance was $2452, for 14 days their balance was $4216, and for 9 days their balance was $2716. Find the average daily balance and the amount of interest that was assessed. (b) The Fishers have a credit card with an annual percentage rate of 19.8%. The unpaid balance for the October billing cycle was $1163.71. During the billing cycle, they made charges of $394.68, $81.21, and $234.16. They made payments of $675 and $250. If the account applies the unpaid balance method, what are the finance charge and the new balance