Imagine that Homer Simpson actually invested the $190,000 he earned providing Mr. Burns entertainment 10 years ago at 8.5 percent annual interest and that he starts investing an additional $2,400 a year today and at the beginning of each year for 20 years at the same 8.5 percent annual rate. How much money will Homer have 20 years from today? The amount of money Homer will have 20 years from now is $. (Round to the nearest cent.) (Annuity payments) Calvin Johnson has a $6,000 debt balance on his Visa card that charges 16.7 percent APR compounded monthly. In 2009, Calvin's minimum monthly payment is 2 percent of his debt balance, which is $120. How many months (round up) will it take Calvin Johnson to pay off his credit card if he pays the current minimum payment of $120 at the end of each month? In 2010, as the result of a federal mandate, the minimum monthly payment on credit cards rose to 3 percent. If Calvin made monthly payments of $180 at the end of each month, how long would it take to pay off his credit card? a. If Calvin made monthly payments of $120 at the end of each month, how long would it take to pay off his credit card? months (Round up to the nearest unit.) b. If Calvin made monthly payments of $180 at the end of each month, how long would it take to pay off his credit card? months (Round up to the nearest unit.)