Present value of an annuity

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

$800 per year for 14 years at 6%.

$  

$400 per year for 7 years at 3%.

$  

$400 per year for 6 years at 0%.

$  

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

$800 per year for 14 years at 6%.

$  

$400 per year for 7 years at 3%.

$  

$400 per year for 6 years at 0%.