the interest rate, the the present value 16. For a given period, the a. higher, bigger b. not sure c. lower, bigger d. lower, smaller 17. It takes about how many years for your initial $1,500 investment to get double if annual compound interest rate is 12%? a. 6 b. 7 c. 8 d. 9 18. Suppose you are offered an investment that will allow you to double your money in 6 years. You have $10,000 to invest. What is the implied rate of interest? a. 12.25% b. 13.5% c. 11.75% d. 15%