A small electric-power-generating protect (or a remote construction site has a first cost of $420,000, an expected annual operating cost of $30,000, and an over-haul in year 8 of $180,000. Revenue from the sales of excess power is expected to be $100,000 year. The facility will have a salvage value of $75,000 at the end of year 15. The MARR is 10%. (a) Draw a cash flow diagram, (b) Is it economically attractive