After visiting several automobile dealerships, Richard selects the used car he wants. He likes its $12,800 price, but financing through the dealer is no bargaln. He has $3,500 cash for a down payment, so he needs an $9,300 loan. in shopping at several banks for an installment loan, he learns that interest on most automobile loans is quoted at add-on rates. That is, during the life of the loan, interest is pald on the full amount borrowed even though a portion of the principat has been pald back. Richard borrows $9,300 for a period of four years at an add-on interest rate of 9 percent. 0. What is the total interest on Richard's loan? Note: Do not round intermediate coleulations. Round your answer to the nearest whole number. b. What is the total cost of the car? Note: Do not round intermediate colculations. Round your answer to the neorest whole number. c. What is the monthly payment? Note: Do not round intermediate calculations. Aound your answer to the nenrest whole number