I want to buy a car. I pay $$500$ per month for five years. The quoted APR is $6\mathrm{.}9\%.$ How much did I pay for the car?

If the best offer was $$535$ per month from the dealership, how much did they want for the car?

What is the balance on the loan after $\frac{21}{2}$ years, if I made every $$500$ payment on time?

How much of payment $2$ is interest? How much goes to principal?

If I make payments of $$590$ per month, how long will it take me to pay off the loan?