Your friend in mechanical engineering has imvented a money machine. The main drawback of the machine is that it is slow. It takes one year to manufacture $100. However, once built, the machine will last forever and will require no maintenance. The machine can be built immediately, but it will cost $1,000 to build. Your friend wants to know if he should invest the money to construct it. If the interest rate is 9.0% per year, what should your friend do? The NPV of the machine is $ (Round to the nearest dollar.) Marian Plunket owns her own business and is considering an investment. If she undertakes the investment, it will pay $28,000 at the end of each of the rext 3 years. The opportunity requires an initial investment of $7,000 plus an additional investment at the end of the second year of $35,000. What is the N.PV of this opportunity if the interest rate is 8% per year? Should Marian take it? The NPV of this opportunity is $ (Round to the nearest dollar.)