What is the present value of the following? Use Appendix B as an approximate answer, but calculate your final answer using the formula and financial calculator methods. a. $8,700 in 9 years at 7 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value b. $17,800 in 4 years at 8 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value C. $27,500 in 12 years at 11 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Present value