1. Consider the following 2 situations: (a) Pam, when she turned 25, made an investment of $20,000 at an annual interest rate of 6.5% compounded semi-annually. Now that she is 50 years old, how much is the investment worth? (b) Sam, a friend of Pam, made a similar investment of $20,000 at a much later date when he turned 35. Now that he is also 50, what is his investment worth if his investment also an earned an annual interest rate of 6.5% compounded semi-annually