please help with the last 3

Entered Answer Preview Result 866.74 866.74 correct 180 180 correct 168 168 correct 68717.8 68717,8 incorrect incorrect incorrect At least one of the answers above is NOT correct 2 of the questions remain unanswered. (point) Fifteen years ago a couple purchased a house for $170,000.00 by paying a 20% down payment and financing the remaining balance with a 30-year mortgage at 6,58% compounded monthly (a) Find the monthly payment for this loan Monthly Payment: $ 886.74 (b) Find the balance of the loan after 15 years and after 16 years. Let n be how many payments are left on the loan After 16 years 180 Loan Balance: Loan Balance: Alter 15 years 168 (c) Find the total amount of interest paid by the couple during the 16th year Interest Paid During 16th years