Last month when Holiday Creations, Inc., sold 40,000 units, total sales were $302,000, total variable expenses were $217,440, and fixed expenses were $35,200, 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 $2,900? (Do not round Intermediate calculations.) 1. Contribution margin ratio 2. Estimated change in net operating income