be sure that you show all of your work to reach your answer. Each step must be on a separate line. Your method to reach your answer must be clear and include explanation

1.A department store offered a 30% discount on all refrigerators. They also stated that the
first 50 customers would receive an additional 5% discount off the sale price. If you purchase a refrigerator that originally sells for $750 and you are among the first 50 customers, what will your total discount be (a) in dollar amount and (b) in percent?

2. 

You plan to purchase items for $ 1500 and will finance the cost with a fixed installment loan.
The seller tells you that you will have to pay $60 per month for 36 months. a.
How much money will you pay for interest (ie the finance charge)?
b.
What is the interest percent rate?