a. The future value of lump-sum Investment of $3,200 in four years that earns 3 percent. Round your answer to the nearest dollar. (Hint: Use Appendix A-1 or the Garman/Forgue companion website.) Round Future Value of a Single Amount in intermediate calculations to four decimal places. $ b. The future value of $1,400 saved each year for three years that earns 6 percent. Round your answer to the nearest dollar. (Hint: Use Appendix A-3 or the Garman/Forgue companion website.) Round Future Value of Series of Equal Amounts in intermediate calculations to four decimal places. $ c. A person who invests $1,000 each year finds one choice that is expected to pay 4 percent per year and another choice that may pay 7 percent. What is the difference in return if the investment is made for four years? Round your answer to the nearest dollar. (Hint: Use Appendix A-3 or the Garman/Forgue companion website.) Round Future Value of Series of Equal Amounts in intermediate calculations to four decimal places. $ d. The amount a person would need to deposit today with a 7 percent interest rate to have $3,000 in three years. Round your answer to the nearest dollar. (Hint: Use Appendix A-2 or the Garman/Forgue companion website.) Round Present Value of a Single Amount in intermediate calculations to four decimal places. $