Find the present values of these ordinary annuities, Discounting occurs once a vear. Do not round intermediate calculations., Round your answers to the nearest cent. a. $500 per year for 16 years it 100%. $ b. $250 per year for 8 years at 5%. 5 c. $200 per year for 8 years at 0%. d. Rework previous parts assuming they are annuties due. Present value of $500 per vear for 16 years at 1045:$ Prosent value of $250 per year for 8 years at 556 ; $ Present value of $200 per year for 8 years at 0% : 3