EnvironTech Engineering in Washington is making an air quality simulator device for the Afroeuroasian market. The following costs for the product have been compiled. Item Cost Selling price (1) $250/unit Materials and purchased parts cost $24/unit Direct labor cost 2 hrs at $26 per hour Indirect labor cost 75% of direct labor cost per hour Operating and maintenance (O & M) cost per unit $15 Fixed cost $1,800,000 Given that the variable cost per unit (v) includes direct and indirect labor costs, operating and maintenance cost, the overhead expenses (which is charged at 200 % of O & M), and the cost of materials and purchased parts, given Q as the total number of quantity produced in a year: a) Write the profit relation for the year. b) Calculate the annual breakeven quantity for this product. c) Determine the total profit and profit per unit if 150% of the annual breakeven quantity are sold d) To reduce the annual breakeven quantity to 18,000 units, what should be the selling price