1. Derek plans to buy a $25,844.00 car. The dealership offers zero percent financing for 57.00 months with the first payment due at signing (today). Derek would be willing to pay for the car in full today if the dealership offers him $____ cash back. He can borrow money from his bank at an interest rate of 4.12%.

2. Derek can deposit $257.00 per month for the next 10 years into an account at Bank A. The first deposit will be made next month. Bank A pays 15.00% and compounds interest monthly. Derek can deposit $2,566.00 per year for the next 10 years into an account at Bank B. The first deposit will be made next year. Bank B compounds interest annually. What rate must Bank B pay for Derek to have the same amount in both accounts after 10 years?

HELP!