Last month when Holiday Creations, Inc., sold 35,000 units, total sales were $305,000, total variable expenses were $247,050, and fixed expenses were $36,800. 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 $1,800? (Do not round Intermediate calculations.) yo 1. Contribution margin ratio 2. Estimated change in net operating income