Write a linear cost function equation for each of the following conditions. Use y for estimated costs and X for activity of the cost driver. a. Direct manufacturing labor is $15 per hour. b. Direct materials cost $25.60 per cubic yard. c. Utilities have a minimum charge of $500, plus a charge of $0.25 per kilowatt-hour. d. Machine operating costs include $250,000 of machine depreciation per year, plus $100 of utility costs for each day the machinery is in operation.

Owns a machine that can produce two specialized products. production time for product tlx is two units per hour and for product mtv is four units per hour. the machine’s capacity is 2,100 hours per year. both products are sold to a single customer who has agreed to buy all of the company’s output up to a maximum of 3,570 units of product tlx and 1,610 units of product mtv. selling prices and variable costs per unit to produce the products follow. product tlx product mtv selling price per unit $ 11.50 $ 6.90 variable costs per unit 3.45 4.14 determine the company's most profitable sales mix and the contribution margin that results from that sales mix.