3. You have been assigned to build a new manufacturing plant costs that $5 million in initial investment. O&M costs are estimated to be $50,000 per year and a salvage value of 25% of the initial cost is expected. The units the plant produces are sold for $40 each. The planning horizon is 10 years, and MARR is 5% per year. (20 points) Find the break-even value for the number of units sold per year