Find the present values of these ordinary annuities. Discounting occurs once a year. Round your answers to the nearest cent. a. $600 per year for 14 years at 8%. b. $300 per year for 7 years at 4%. C. $900 per year for 12 years at 0%. Rework previous parts assuming that they are annuities due. Round your answers to the nearest cent. d, $600 per year for 14 years at 8%. e, $300 per year for 7 years at 4%. $900 per year for 12 years at 0%