6. You have $100 to invest. If you can earn 12% interest, about how long does it take for your $100 investment to grow to $200? Suppose that the interest rate is half that, at 6%. At half the interest rate, does it take twice as long to double your money? Why or why not? How long does it take? 8. Jim Nance has been offered an investment that will pay him $460 three years from today. a. If his opportunity cost is 58 compounded annually, what value should he place on this opportunity today? b. What is the most he should pay to purchase this payment today