(1 point) A couple has decided to purchase a $120000 house using a down payment of $20000. They can amortize the balance at 5% over 15 years. a) What is their monthly payment? Payment = $ b) What is the total interest paid? Total interest paid = $ c) What is the equity after 5 years? Equity after 5 years = $ d) What is the equity after 10 years? Equity after 10 years = $