1. Jake wishes to pay off his credit card balance of $2,899 in 3 years, 3 months. If his interest rate is 17.4%, determine how much he would have paid in total interest by the time the balance is paid off. Use the TI formula

2. Sally paid $67 per month on her $3100 Master card bill, how long did it take to pay off the balance? Assume that the interest rate on the credit card was 15.8% and that he made no other charges before paying it off.