Beth wants to buy a bar called Puzzle that will cost $80,000. She will make a down payment of $10,000 and take out a mortgage on the rest of the money at 9% compounded monthly. a. What will be her monthly payments to pay off the mortgage in 20 years? b. Beth has made 28 monthly payments and wants to figure out the remaining balance 2) immediately after the 28th payment. What is that balance? Answer: a) $630 b) $66,768.30