Feather Friends, Incorporated, distributes a high-quality wooden birdhouse that sells for $20 per unit. Variable expenses are $8 per unit, and fixed expenses total $180,000 per year. Its operating results for last year were as follows: Sales $ 400,000 Variable expenses 160,000 Contribution margin 240,000 Fixed expenses 180,000 Net operating income $ 60,000 Required: Answer each question independently based on the original data: 1. What is the product's CM ratio? 2. Use the CM ratio to determine the break-even point in dollar sales. 3. Assume this years unit sales and total sales increase by 3,750 units and $75,000, respectively. If the fixed expenses do not change, how much will net operating