se the following summary of notation used for simple and compound interest to answer the PV principal or present value FV future or maturity value Tannual (stated or nominal) interest rate t number of years m i n = number of compounding periods per year interest rate per period total number of compounding periods E = effective rate (APY) What is the difference between r and i? he annual interest rate, r, is only equal to the interest rate per period, i, if interest is compoun therwise i