The present value represents the amount of money you would have to deposit today in order to match what you would get from the income stream at the future date. The formula is

Present Value $={\displaystyle \underset{0}{\overset{M}{}}}S(t)e^{-rt}dt$

Future value represents the total amount of money you would have if you deposit the income stream until a future date. The formula is

Future Value $=()**$

To start our problem we need to identify the variables.

Time $=M=|$ years $|$

Rate $=r=1$ dollar$\frac{s}{y}$ear