This document provides three examples of calculating future and present values of investments using compound interest formulas. The first two examples show calculating the future value after 7 years of an initial $4000 investment at 5.5% annual interest, with the second example compounding interest monthly rather than annually, resulting in a higher future value. The third example calculates the present value of an annuity worth $11,375 in 5 years at 6% interest per year.