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Frontier Corp. has a contribution margin of $1,800,000 and profit of $600,000. What is its degree of operating leverage? Multiple Choice 0.33 3.67 5.50 3.00 Frontier Corp. sells units for $49, has unit variable costs of $24, and fixed costs of $144,000. Frontier sells 10,000 units. If sales increase 18%, by how much will profits increase? Multiple Choice 18.005 23.58% 42.45x 66.04x