6. Suppose you have a credit card balance of $15,000 and your card carries a 25.99% APR, compounded monthly. a. If the minimum payment is $325 per month, how long will it take to pay off the balance? b. If you decide to pay $330 per month instead, how long will it take to pay off the balance? c. How much would you save in total interest paid by paying the extra $5 per month?