Problem 7-3 (LG 7-4) You plan to purchase an $100,000 house using a 15-year mortgage obtained from your local bank. The mortgage rate offered to you is 4 percent. You will make a down payment of 10 percent of the purchase price. a. Calculate your monthly payments on this mortgage. b. Calculate the amount of interest and, separately, principal paid in the 90th payment. c. Calculate the amount of interest and, separately, principal paid in the 108th payment. d. Calculate the amount of interest paid over the life of this mortgage. (For all requirements, do not round intermediate calculations. Round your answers to 2 decimal places. (e.g., 32.16)) X Answer is complete but not entirely correct. Amount a. Monthly payment $ 665.54 b. Amount of interest $ 173.74 $ 491.80 C. $ 143.41 Amount of principal Amount of interest Amount of principal Amount of interest paid $ 522.13 d. 119,797.20 X