Problem 2 A couple buying a house borrows $225,000 for 30 years at 5.4% interest, compounded monthly. a) What is the couple's monthly house payment going to be? ( 2pts ) b) How much will the couple pay in interest? (2pt) c) If the couple were to pay an additional $125 per month toward the cost of their home, how much sooner would the house be paid off? ( 2 pts) d) How much money in interest would doing this save the couple? Should they do it? (2 pts)