Find the present values of these ordinary annuities. Discounting occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $300 per year for 10 years at 8%. b. $150 per year for 5 years at 4%. C. $800 per year for 5 years at 0%. d. Rework previous parts assuming they are annuities due. Present value of $300 per year for 10 years at 8% : $ Present value of $150 per year for 5 years at 4%:$ Present value of $800 per year for 5 years at 0%:$