You take out a $15,500 car loan at 8.4\% APR. (a) What is the monthly or periodic interest rate? (b) Your monthly rate can be expressed as a ratio x:100. What quantity does the x represent? (c) How much interest is charged in the first month? (a) The monthly or periodic interest rate is (Type an integer or a decimal.) (b) What quantity does the x represent? Balance at end of month, if the principal is $100 Interest charged per month, if the principal is $100 Amount owed per month, if the principal is $100 (c) The interest charged in the first month is $ (Round to the nearest cent as needed.)