Kevin Lin wants to buy a used car that costs $9,450. A 10% down payment is required.

(a) The used car dealer offered him a four-year add-on interest loan at 7% annual interest. Find the monthly payment. (Round your answer to the nearest cent.) $ (b) Find the APR of the dealer's loan. Round to the nearest hundredth of 1%. % (c) His bank offered him a four-year simple interest amortized loan at 9.2% interest, with no fees. Find the APR, without making any calculations. %