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 Direct materials Variable manufacturing overhead Direct labor Fixed manufacturing overhead Fixed administrative expense Sales commissions Fixed selling expense Variable administrative expense per Unit $ 6.80 $ 4.30 $1.60 $ 4.00 $ 3.80 $ 2.20 $ 1.20 $ 0.45 Foundational 1-13 (Algo) 13. If the selling price is $22.80 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