Mrs. Truhan deposited $30,000 into her bank account which pays 12% interest compounded semiannually. How much will she have in her account at the end of four vears? Jennifer wants to buy a new car in seven years. Jennifer estimated the cost of the car will be about $7,200. If she invests $4,000 now, at a rate of 12% interest, compounded semiannually, will she have enough money to buy her new car at the end of seven years? (Show your work and indicated yes or no) Karen is having difficulty in deciding whether to put her savings in Sassy Bank or 7-11 Bank. Sassy offers a 10% interest rate, compounded semiannually, while 7- 11 offers a 12% rate compounded annually. Karen has $30,000 to deposit and expects to withdraw the money at the end of five years. Which bank gives her the best deal, and by how much