a. You want to save at least $10,000 for a down payment on a new car. In cell B6, enter a formula to calculate how much you will have saved by putting away $400 per month for 24 months at a 1.75% annual interest rate. Use the appropriate cell references. Remember to use a negative value for the Port argument. There is no money in the account yet and payments are applied at the end of every month, so omit both the Py and Type arguments. (Hint: Use the FV function.) b. You also want to save for retirement. In cell B12, enter a formula to calculate how much you will have saved by putting away that same $400 per month for 25 years at 4%. Use the appropriate cell references. Remember to use a negative value for the Pw argument and to adjust the Rate and Nper arguments to reflect monthly payments. There is no money in the account yet and payments are applied at the end of every month, so omit both the Py and Type arguments. (Hint: Use the FV function.)