Required information [the following information applies to the questions displayed below.] martinez company’s relevant range of production is 7,500 units to 12,500 units. when it produces and sells 10,000 units, its average costs per unit are as follows: average cost per unit direct materials $ 6.30 direct labor $ 3.80 variable manufacturing overhead $ 1.50 fixed manufacturing overhead $ 4.00 fixed selling expense $ 3.30 fixed administrative expense $ 2.00 sales commissions $ 1.00 variable administrative expense $ 0.50 13. if the selling price is $22.30 per unit, what is the contribution margin per unit? (do not round intermediate calculations. round your answer to 2 decimal places.)