13 Part 13 of 15 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: 10 points Print Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Fixed selling expense Fixed administrative expense Sales commissions Variable administrative expense Average Cost per Unit $5.50 $3.00 $1.50 $4.00 $2.50 $2.00 $1.00 $0.50 13. If the selling price is $21.50 per unit, what is the contribution margin per unit? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Contribution margin per unit