Find the future values of these ordinary annuities. Compounding occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $800 per year for 16 years at 12%. $ b. $400 per year for 8 years at 6%. $ c. $500 per year for 8 years at 0%. $ d. Rework parts a, b, and c assuming they are annuities due. Future value of $800 per year for 16 years at 12% : $ Future value of $400 per year for 8 years at 6% : $ Future value of $500 per year for 8 years at 0% : $