3)Last month Karina Company had a $60,000 profit on sales of $300,000. Fixed costs are $120,000 a month. What sales revenue is needed for Calico to break even? 4)Frank Corp sells units for $50, has unit variable costs of $20, and fixed costs of $300,000. If Frank sells 15,000 units, what is its degree of operating leverage? 5)Emille Corp has a selling price of $20 per unit, variable costs of $10 per unit, and fixed costs of $100,000. How many units must be sold to break even?