Washington Mill Works is considering purchasing a large resawing band saw for $30,000. The saw has a useful life estimated to be seven years, at which point it will have an estimated salvage value of $8,000. Annual income each year for the 7 years is $9000. Annual operating expenses are $3,000. Assume MARR = 7.5% and the planning horizon is 7 years. What is the present worth, annual worth, future worth, internal/external rate of return?

Please answer all parts. Include a cashflow diagram if possible.