If a capital sum of money P is placed on compound interest at a rate I compounded annually, show that the future sum of the F, after the number of interest periods n could be expressed as:

1. If a sum of 25,000 is invested at the interest rate of 8 percent per year for 10 years. How much will the investor receive at the end of investment.
2. To receive 10,000 in the future 20 years from now, how much should I deposit today at 10 percent interest per year