13. Problem 5.15 (Present Value of an Annuity) eBook Find the present values of these ordinary aniquities. Discounting occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $300 per year for 16 years at 4%. $ b. $150 per year for 8 years at 2%. $ c. $200 per year for 8 years at 0%. $ d. Rework previous parts assuming they are annuities due. Present value of $300 per year for 16 years at 4%: $ Present value of $150 per year for 8 years at 2%: $ Present value of $200 per year for 8 years at 0%: $