Required information The Foundational 15 (Algo) [LO1-1, LO1-2, LO1-3, LO1-4, LO1-5, LO1-6] [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: Foundational 1-13 (Algo) 13 If the selling price is $21.00 per unit, what is the contribution margin per unit? Note: Do not round intermediate calculations. Round your answer to 2 decimal places