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. $400 per year for 16 years at 8%.

b. $200 per year for 8 years at 4%.

c. $1,000 per year for 8 years at 0%.

Rework previous parts assuming they are annuities due.

Present value of $400 per year for 16 years at 8%:

Present value of $200 per year for 8 years at 4%:

Present value of $1,000 per year for 8 years at 0%: