Hi, I need some help with my cost accounding homework please

Exercise 4-26 Contribution Margin Ratio, Variable Cost Ratio, Break-Even Sales Revenue

The controller of Pelley Company prepared the following projected income statement:

Sales	$95,000
Total variable cost	68,400
Contribution margin	$26,600
Total fixed cost	14,000
Operating income	$12,600

Required:

• 1.Calculate the contribution margin ratio.
• 2.Calculate the variable cost ratio.
• 3.Calculate the break-even sales revenue for Pelley.
• 4.CONCEPTUAL CONNECTION How could Pelley increase projected operating income without increasing the total sales revenue?