Financing math problem?

Liz Gonzalez Asked: Financing math problem?

1) Jack wishes to purchase a used car that has a price of $12,000. The installment terms include a down payment of $3000 and 48 monthly payments of $224
a. What finance charge will jack Pay?
b. What is the APR to the nearest half percent?
2) Karen is purchasing a brownstone townhouse in Brooklyn for $1,750,000. The mortgage broker she is working with is requiring her to make 15% down payment. The current mortgage rate is 6.0%
a. Determine the amount of the required down payment
b. Determine the monthly principal and interest payment for a 25 year loan with a 15% down payment
3) Stacie is purchasing her first home for $275,000. She is obtaining an FHA mortgage through her credit union and is required to make a 3% down payment. The current mortgage rate is 7.5%
a. Determine the amount of the down payment
b.Determine the monthly principal and interest payment for a 30 year loan with a 3% down payment