f you invest $15,250 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 7 years at 9 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)

b. In 18 years at 7 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)

c. In 18 years at 10 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)

d. In 20 years at 10 percent (compounded semiannually)? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)