1. You are taking out a car loan and will make payments of $400 each month, for a total of 60 monthly payments. You also have $6,398 for a down payment. The APR is 10.8% with quarterly compounding. How much does the car cost?

2. You will deposit $500 every six months into an investment account that earns 6% interest (APR with monthly compounding). Your first deposit will be today, and you'll make a total of 20 deposits. How much will be in your account 10 years from today?

3. An investment offers $554 per year forever, with the first payment occurring today. If the nominal rate is 5.5% with monthly compounding, the value of the entire investment today is $ ______.