Bottoms Up Diaper Service is considering the purchase of a new industrial washer. It can purchase the washer for $$1,800$and sell its old washer for $$600.$The new washer will last for $6$years and save $$500$a year in expenses. The opportunity cost of capital is $19\%,$and the firm$$s tax rate is $21\%.$

a$)$If the firm uses straight$-$line depreciation over a $6-$year life, what are the cash flows of the project in years $0$to $6?$The new washer will have zero salvage value after $6$years$,$ and the old washer is fully depreciated.

b$)$What is project NPV$?$

c$)$What is NPV if the firm investment is entitled to immediate $100\%$bonus depreciation?