Exercise 6.4 (Algo) Computing and Using the CM Ratio [LO6-3] Last month when Holiday Creations, incorporated, sold 42,000 units, fotat sales were $168.000, total vattable expenses were $131,040. and fixed experses were $38,300. Required: 1. What is the comparyy's contribution margin (CM) ratio? 2. What is the estimated change in the company's net operating income if it can increase sales volume by 750 units and total sales by $3.000? (Do not round intermediote calculations.)