Your buddy in mechanical engineering has invented a money machine. The main drawback of the machine is that it is slow. It takes one year to manufacture $ 700. However, oncebuilt, the machine will last forever and will require no maintenance. The machine can be builtimmediately, but it will cost $7,000 to build. Your buddy wants to know if he should invest the money to construct it. If the interest rate is 9.0 % peryear, what should your buddydo?