13. I want to buy a car. I pay $506 per month for five years. The quoted APR is 6.9%. How much did I pay for the car? 14. If the best offer was $548 per month from the dealership, how much did they want for the car? 15. What is the balance on the loan after 221 years, if I made every $506 payment on time? 16. How much of payment 2 is interest? How much goes to principal? 17. If I make payments of $580 per month, how long will it take me to pay off the loan? 18. If the quoted APR on my credit card is 18%, what is the effective annual rate I am paying if the compounding period is monthly? Daily? 13. I want to buy a car. I pay $506 per month for five years. The quoted APR is 6.9%. How much did I pay for the car? 14. If the best offer was $548 per month from the dealership, how much did they want for the car? 15. What is the balance on the loan after 221 years, if I made every $506 payment on time? 16. How much of payment 2 is interest? How much goes to principal? 17. If I make payments of $580 per month, how long will it take me to pay off the loan? 18. If the quoted APR on my credit card is 18%, what is the effective annual rate I am paying if the compounding period is monthly? Daily