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. $1,000 per year for 8 years at 16%. $ b. $500 per year for 4 years at 8%. $ c. $600 per year for 4 years at 0%. $ d. Rework parts a, b, and c assuming they are annuities due. Future value of $1,000 per year for 8 years at 16% : $ Future value of $500 per year for 4 years at 8% : $ Future value of $600 per year for 4 years at 0%:$