1. A company makes calculators that sell for $20 each. For the coming year, management expects fixed costs to total $220,000 and variable costs to be $9 per unit. Compute:

1. break-even point in units using the mathematical equation.
2. break-even point in dollars using the contribution margin (CM) ratio.
3. the margin of safety percentage assuming actual sales are $500,000.
4. the sales required in dollars to earn net income of $165,000.