If you invest $9,900 per period for the following number of periods, how much would you have received at the end? Use Appendix C (Round "Factor" to 3 decimal places. Round the final answers to the nearest whole dollar.) a. 12 years at 6 percent Future value $ 167012 b. 15 years at 12 percent Future value $369069 c. 30 periods at 9 percent Future value $3345036