You plan to purchase a $150,000 house using a 30 -year mortgage obtained from your local credit unic The mortgage rate offered to you is 5.75 percent. You will make a down payment of 20 percent of the purchase price. a. Calculate your monthly payments on this mortgage. b. Construct the amortization schedule for the first six payments. Complete this question by entering your answers in the tabs below. Calculate your monthly payments on this mortgage. (Do not round intermediate calculations. Round your places. (e.g., 32.16))