1. What is the contribution margin per unit?

2. What is the contribution margin ratio?

3. What is the variable expense ratio?

4. If sales increase to 1,001 units, what would be the increase in net operating income? (Round your answer to 2 decimal places.)

5. If sales decline to 900 units, what would be the net operating income?

6. If the selling price increases by $2 per unit and the sales volume decreases by 100 units, what would be the net operating income?

7. If the variable cost per unit increases by $1, spending on advertising increases by $1,100, and unit sales increase by 120 units, what would be the net operating income?

8. What is the break-even point in unit sales?

9. What is the break-even point in dollar sales?

10. How many units must be sold to achieve a target profit of $4,200?

11. What is the margin of safety in dollars? What is the margin of safety percentage?

12. What is the degree of operating leverage? (Round your answer to 2 decimal places.)