Animals, Inc. Is considering a machine that will cost $18,000 and which can be sold after 3 years for $2,000, The machine will save Animals costs of $18,000 per year for 3 years. The machine will be depreciated on a straight line basis over three years to a zero salvage value. Animais has a 20% tax rate and a 10% cost of copital. What is the NPV of the machine