Problem: Calculate the compound interest for the following:
$10,000 invested for 10 years at 10% compounded annually
$4,000 invested for 7 years at 8% compounded annually
Calculate the present value for the following:
$400 to be received 10 years from now discounted back to the present at 10%
$600 to be received 5 years from now discounted back to the present at 5%