Find the future values of these ordinary annuities. Compounding occurs once a year. Round your answers to the nearest cent. a. $500 per year for 4 years at 16%. $ b. $250 per year for 2 years at 8%. $ c. $300 per year for 12 years at 0%. $ Rework previous parts assuming that they are annuities due. Round your answers to the nearest cent. d. $500 per year for 4 years at 16%. e. $250 per year for 2 years at 8%. f. $300 per year for 12 years at 0%. $