Joan Hampton currently has $5,750 in a money market account paying 4.37 percent compounded semi-annually. She plans to use this amount and her savings over the next 5 years to make a down payment on a townhouse. She estimates that he will need $15,000 in 5 years. How much should she invest in the money market account semi-annually over the next 5 years to achieve this target? a. $ 886.28 b. $ 712.01 c. $ 650.97 d. $ 610.79