An equipment will cost $$6,000$ when purchased. Maintenance will cost $$400$ per year. The device will generate revenues of $$1800$ per year for $5$ years. The salvage value is $$1000.$ Annual interest rate is $4\%.$

Draw the cash flow diagram. and simplify the cash flow diagram $($keep one annual cash flow$),$ keep the salvage value separate. $(3$pts$+2$pts$)$

blank $1$: What is the present worth from annual net revenues $($combine annual cost and revenues as one$)?$

Blank $2$: What is the present worth from salvage value?

Blank $3$: What is total present worth $($cost is negative, please calculate the profit$)$

Blank $4$: Should we invest the