Find the interest rates in the following situations. a. APRequals9​%, compounded quarterly. Find the effective annual interest rate. b. Nominal rate is 8​% compounded monthly. Find the effective​ semi-annual rate. c. The effective annual interest rate is 9.06​% and compounding is monthly. Find the nominal interest rate. d. requals9​% and compounding is quarterly. Find the effective​ semi-annual interest rate.