Before purchasing a used car, Jim Myers checked www.kbb.com to learn what he should offer for the used car he wanted to buy. Then he conducted a carfax.com search on the car he found to see if the car had ever been in an accident. The Carfax was clean so he purchased the used car for $15,000. She put $2,500 down and financed the rest with a 48-month, 7.5% loan. What is her monthly car payment by formula?