Question 7 and 8 please

4 pts Question 6 3. At an effective annual interest rate of 9 percent, how many years will it take a given amount to multiply by a factor of four in value? (Round to the closest year and enter no decimals.) Question 7 4 pts 4. Which bank CD (assume equal risk) has the highest effective annual return (EAR)? O a. One that pays 7.99 percent daily (on a 365-day basis) O b. One that pays 8.00 percent monthly. O c. One that pays 8.00 percent annually. O d. One that pays 8.15 percent quarterly. e. One that pays 8.20 percent semiannually. s SHARE ****