Please show work for 6.

Consider the following investment project with a useful life of 8 years. The marketing department estimates that 10,000 units of the proposed product can be sold per year. Verify that the project is economically attractive (before-tax) at a 12% MARR with a useful life of 8 years. Determine whether this decision is more sensitive to a change in the estimated number of units sold per year or to a in the initial investment. Consider the following information associated with a 2 year old asset (the "defender) with an original cost 6. basis of $4, 400: Find the after tax cash flows (ATCFs) of this defender using an after-tax MARR of 12% and an be replaced rate of 40%. If the best challenger has a known after-tax Pw over 3 years $-14,000 should the defender of Explain. Answer: PW of defender ATCFs is $-16, 076 so yes replace