Exercise 5-4 Computing and Using the CM Ratio (LO5-3) Last month when Holiday Creations, Inc., sold 39,000 units, total sales were $305,000, total variable expenses were $247050, and fixed expenses were $39,200 points (8 094330 Required: 1. What is the company's contribution margin (CM) ratio? 2. What is the estimated change in the company's net operating income if it can increase total sales by $2.800? (Do not round Intermediate calculations.) References 1. Contrbution margin ratio 2. Estimated change in net operating income