If you invest \$8,500 per period for the following number of periods, how much would you have in each of the following instances? Use Appendix C as an approximate answer, but calculate your final answer using the formula and financial calculator methods. a. In 12 years at 10 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.) b. In 50 years at 9 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)