5. John and Mary Gardener want to purchase 100 acres of farm land valued at $1,800 per acre. Their lender requires a 25% down payment. Assume thirty annual payments. The interest rate is 8%. a. Calculate the schedule of interest and principal payment over the life of the loan using i. the constant payment method ii. the constant payment on principal method. iii. What is the total interest paid over the life of the loan with each method? b. Calculate the interest and principal payment schedule for a 5-year balloon payment loan. Assume annual payments, 9% interest rate, and a 30 year amortization schedule.