The annual percentage rate (APR) is calculated as Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Interest rate per period x compounding periods per year. b (1+quoted annual rate/compounding periods per year) x compounding periods per year - 1. c Interest rate per period / compounding periods per year. d 1+quoted annual rate/compounding periods per year/compounding periods per year - 1