7. Which of the following cannot be calculated? A. present value of a perpetuity B. present value of an ordinary annuity C. future value of an ordinary annuity D. future value of an annuity due E. future value of a perpetuity Answer: 8. The nominal interest rate (APR) that you are being charged on your unpaid credit card balance is 12 percent per year. Interest charges are incurred monthly. In other words, the frequency of interest rate compounding is monthly. What is the effective annual interest rate (EAR) on your credit card? A. 11.39 percent B. 12.00 percent C. 12.36 percent D. 12.68 percent E. 12.75 percent