(1 point) Fifteen years ago a couple purchased a house for $210,000.00 by paying a 20% down payment and financing the remaining balance with a 30-year mortgage at 6.22% compounded monthly. (a) Find the monthly payment for this loan. Monthly Payment: $ (b) Find the balance of the loan after 13 years and after 14 years. Let n be how many payments are left on the loan. After 13 After 14 years years n = n = Loan Loan Balance: $ Balance: $ (c) Find the total amount of interest paid by the couple during the 14th year. Interest Paid During 14th year: $