Troy is buying a car that costs $15,000 he plans to get a five-year loan to pay for it. He can get a loan for $15,000 or he can pay $3,000 from his savings to get a loan for the rest. The savings account pays 2% simple interest per year the simple interest rate for the loan is 0. 5%. How much interest over a five-year period will receive his $3,000 if he does not withdraw the money from his savings account? How much money interest will he pay to borrow $15,000 then $12,000? why is this $15,000 option reasonable?