Cici purchased $2000 worth of merchandise with her credit card this past month. then she was unexpectedly laid off from her job. she decided to make no more purchases with the card and to make only the minimum payment of $40 each month. her annual interest rate is 18%, compounded monthly. a) find the balance on her credit card over the next six months. b) when will cici pay off the total balance on her credit card? c) what is the total amount paid for the $2000 worth of merchandise?