Graphing calculators

I have several scenarios I would like you to explore with the use of your graphing calculator.

Scenario 1: Suppose you put $1000 on a credit card that charges 12% interest. You make no payments. How much interest do you pay in 1 year?

Scenario 2: Suppose you put $1000 on a credit card that charges 12% interest. You make a payment of 100 each month. How much interest do you pay in 1 year?

Scenario 3: Suppose you take out a 4-year loan for a car for 14,999. If the interest rate is 10.99%, what is your monthly payment?