62. Mrs. Behnke bought a new car. She financed $13,500 at 3.9% /a compounded monthly and chose to make monthly payments for 4 years. a) What amount does Mrs. Behnke pay per month? b) The dealership told Mrs. Behnke that her payments would be $321.89 per month for 48 months. If Mrs. Behnke didn't correct them, how much extra would she pay