Find c, the total of the payments, and the monthly payment. Choose the correct answers. Sue Stitch buys a sewing machine. The price, including tax, is $575.00. She finances the sewing machine over 24 months after making a $25 down payment. The true annual interest rate is 15%. What are Sue's monthly payments (principal plus interest)? To the nearest penny, c = $. Total of payments = amount financed + c = $. Total of payments ÷ number of payments = monthly payment = $ .