17. Wilbur's daughter Sarah purchased a used Dodge Ram pickup for $36,650. She put $5500 down and financed the rest at 4.6% add-on interest for 36 months. (pts) a. What is the interest that she paid? b. What are her monthly payments? C. The trade-in value of the truck was $13,400 after 6 years. What was the annual depreciation rate the IRS allowed Sarah for her truck? 18. Wilbur's idiot son bought a used 1200 cc Harley for $9,500. The license plates were $65, and new tires were $499.50. He paid a Montana state sales tax of 7.5% and he made a $1025. down payment. He financed the remainder at 9.5% APR for 36 months. (6 pts) a. What are his monthly payments? b. What is the total cost of the idiot's Harley