Exercise 6-4 Computing and using the CM Ratio (LO6-3) Last month when Holiday Creations, Inc., sold 38,000 units, total sales were $301,000, total variable expenses were $255,850, and fixed expenses were $36,400. 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 $1,500? (Do not round Intermediate calculations.) Book 1. Contribution margin ratio 2. Entrated change in net operating income