Find the present values of these ordinary annuities. Discounting occurs once a year. Round your answers to the nearest cent.

1. $1,000 per year for 12 years at 4%.

2. $500 per year for 6 years at 2%.

Rework previous parts assuming that they are annuities due. Round your answers to the nearest cent.

c. $1,000 per year for 12 years at 4%.

d. $500 per year for 6 years at 2%.