help with 1-4

Margin of Safety and Operating Leverage Medina Company produces a single product. The projected income statement for the coming year is as follows: Sales (72,000 units $19.00) $1,368,000 Total variable cost 766,080 Contribution margin $ 601,920 Total fixed cost 585,200 Operating income $16,720 Required: 1. Compute the break-even sales dollars. 2. Compute the margin of safety in sales dollars 3. Compute the degree of operating leverage 4. Compute the new operating income if sales are 20% higher than expected