Please show all work and equations used

You are considering relocating your outdoor-equipment manufacturing plant and have narrowed your choices to four possible locations based on the availability of high quality labor, rail transportation, and an adequate distribution network. Based on the following costs and benefits associated with each location, use incremental analysis and IRR to choose the most cost-effective location assuming MARR = 18%.

	Portland, OR	Bend, OR	Boise, ID	Seattle, WA
Initial cost (Year 0)	$1,300,000	$1,700,000	$1,100,000	$1,900,000
Annual operations and maintenance costs (Years 1 thru 20)	500,000	1,000,000	400,000	1,100,000
Annual gross benefits (Years 1 thru 20)	800,000	1,375,000	625,000	1,500,000