How much would you have to invest today to receive the following? Use Appendix B or Appendix D for an approximate answer, but calculate your final answer using the formula and financial calculator methods. a. $14,100 in 5 years at 9 percent. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value b. $18,000 in 19 years at 7 percent. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value c. $7,200 each year for 13 years at 11 percent. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value d. $49,000 each year for 25 years at 6 percent. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value