Last month when Holiday Creations, Inc., sold 42,000 units, total sales were $283,000, total variable expenses were $234,890, and fixed expenses were $35,300. 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 $2,9007 (Do not round intermediate calculations. 31 1. Contribution margin ratio 2. Estimated change in net operating income