Problem 9-5 Calculating Monthly Mortgage Payments [LO9-4] Based on Exhibit 9-9, or using a financial calculator, what would be the monthly mortgage payments for each of the following situations? Note: Round time value factor and final answers to 2 decimal places. What relationship exists between the length of the loan and the monthly payment? How does the mortgage rate affect the monthly payment? a. $120,000, 15-year loan at 5 percent. b. $86,000, 30-year loan at 4.5 percent. c. $105,000, 20-year loan at 4 percent. d-1. Longer mortgage terms mean a d-2. For increase in mortgage rate monthly payment. Monthly Mortgage Payment monthly payment is required.