Present value concept Answer each of the following questions. a. What single investment made today, earning 6% annual interest, will be worth $4,200 at the end of 6 years? b. What is the present value of $4,200 to be received at the end of 6 years if the discount rate is 6%? c. What is the most you would pay today for a promise to repay you $4,200 at the end of 6 years if your opportunity cost is 6%? d. Compare, contrast, and discuss your findings in part a through c