15. What interest rates are implied by the following lending arrangements? a. You borrow $490 and repay $563.60 in one year. b. You lend $1,820 and are repaid $1,893.53 in two years. c. You lend $750 and are repaid $1,114.46 in five years with quarterly compounding. d. You borrow $12,800 and repay $21,876.99 in three years under monthly compounding. 16. How long does it take $5,000 to grow into $7,422.53 at 10% compounded quarterly? 17. How long does it take $1,000.00 to grow into $20,000 at 12% compounded monthly? 18. What have you learned after studying this chapter? Is a dollar worth more today than it is tomorrow? Explain