Dorothy & George Company is planning to acquire a new machine at a total cost of $$54,800.$ The machine's estimated life is $6$ years

and its estimated salvage value is $$500.$ The company estimates that annual cash savings from using this machine will be $$11,000.$ The

company's after$-$tax cost of capital is $7\%$ and its income tax rate is $40\%.$ The company uses straight$-$line depreciation $($non$-$MACRS$-$

based$).($Use Appendix C$,$ Table $1$ and Appendix C$,$ Table $2.)($Do not round intermediate calculations. Negative amounts should be

indicated by a minus sign. Round "Payback period" to $2$ decimal places and all other answers to the nearest dollar amount.$)$

Required:

What is this investment's net after$-$tax annual cash inflow?

Assume that the net after$-$tax annual cash inflow of this investment is $$8,000$; what is the payback period in years?

Assume that the net after$-$tax annual cash inflow of this investment is $$8,000$; what is the net present value $($NPV$)$ of this investment?

What are the minimum net after$-$tax annual cost savings that make the proposed investment acceptable $($i$.$e$.,$ the dollar cost savings

that would yield an NPV of $$0)?$