a. if you deposited $750 in a savings account paying 8 percent, how much interest would you earn in nine months? b. If your savings of $400 earns 12 percent, compounded monthly, over a year and a half; how much is the future value? c. If you plan to deposit $40 a year for 10 years and earning 8 did percent compound annually, how much is the future value of this amount? d. If you want to have $300 seven years from now and your savings earn 10 percent, compounded semiannually, how much you would have to deposit today