A property is purchased for $89,000. The purchase is financed with a GPM carrying a 12 percent interest rate. A 7.9 percent rate of graduation will be applied to monthly payments beginning each year after the loan is originated for a period of five years. The initial loan amount is $80,100 for a term of 30 years. The homeowner expects to sell the property after seven years. Required: a. If the initial monthly payment is $633.89,