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 3. $900 per year for 16 years at 6%. $ b. $450 per year for 8 years at 3%. $ C. $300 per year for 8 years at 0% $ d. Rework previous parts assuming they are annuities due Present value of $900 per year for 16 years at %5 Present value of $450 per year for 8 years at Present value of $300 per year for 3 years at