Last month when Holiday Creations, Incorporated, sold 37,000 units, total sales were $148,000, total variable expenses were $116,920, and fixed expenses were $36,100 Required: 1. What is the company's contribution margM) ratio? 2. What is the estimated changs in the company's net operring income if it can increase sales volume by 675 unts and total sales by $2,700? (Do not round intermediate calculations.) 1. Contribution margin ratio 2. Estimated change in net operating income 211% 526 $