If you invest $15,500 today, how much will you have in each of the following instances? Use Appendix A as an approximate answer, but calculate your final answer using the formula and financial calculator methods. a. In 8 years at 7 percent? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places. Future value b. In 19 years at 10 percent? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places. Future value c. In 20 years at 12 percent? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places. Future value d. In 25 years at 12 percent (compounded semiannually)? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places.