A firm is considering buying a new machine. Facts related to machine are as follows. 1) will cost $800 2) will generate annual sales of $1,000 over next 8 years which is actual life of machine 3) annual cost of goods sold is $400 and other expenses are $300 per year 4) depreciation on machine is straight line method over 8 years 5) Salvage value or T.V is $0 6) Firms tax rate is 40% 7) Discount rate is 15% Should firm buy this machine? Use a number line to show work and use NPV method. DO NOT USE EXCEL .