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.

1. $500 per year for 16 years at 14%.

2. $250 per year for 8 years at 7%.

3. $1,000 per year for 16 years at 0%.

4. Rework previous parts assuming they are annuities due.

   Present value of $500 per year for 16 years at 14%:

   Present value of $250 per year for 8 years at 7%:

   Present value of $1,000 per year for 16 years at 0%: