Suzanne's average daily balance for last month was x dollars. The finance
charge was y dollars.
a. What was the monthly percentage rate?
b. What was the APR?

Part a: Monthly percent rate = y/x Part b:  APR = y/x × 12.What is meant by the term APR?The annual interest produced by a sum that is paid to investors or charged to borrowers is referred to as the annual percentage rate (APR). APR is a percentage that expresses the actual annual cost of borrowing money over the course of a loan or the income from an investment. An APR might not accurately represent the cost of borrowing but since lenders have some latitude in determining it, excluding some fees.APR and APY (annual percentage yield), a computation that takes interest compounding into account, should not be confused.For the given question;Average daily balance sheet of Suzanne's is  x dollars.Finance charges = yPart a: monthly percentage rateFinance charge = Monthly percent rate × Average daily balanceMonthly percent rate = Finance charge/Average daily balanceMonthly percent rate = y/x Part b: APRThe annual percentage rate (APR) is calculated by dividing the periodic interest rate even by number of periods in the year that it was in effect. The number of times the rate is applied to a balance is not stated.Thus, For 12 months. APR = y/x × 12 Thus, the value of APR for the period of 12 months is APR = y/x × 12 .To know more about the APR, herehttps://brainly.com/question/341269#SPJ13