Answer:
1. The difference between contribution margin and income from operations is fixed costs. income from operations = Contribution margin - Fixed expenses. So therefore, the difference between contribution margin and income from operations is known as fixed costs.
2. A company's operating leverage is computed as contribution margin divided by income from operations. Degree of Operating Leverage = Contribution Margin / Net Operating Income
3. The sales mix is the relative distribution of sales among the products sold by a company.
4. The unit selling price of the overall enterprise product equals the sum of the unit selling prices of each product multiplied by its sales mix percentage.