Cast month when Hoday Creations, Incorporated, sold 42,000 units, total sales were $168,000, total variable expenses were $139,440, and foxed expenses were $36,400 Required: 1. What is the compary's contibution margin (CM) ratio? 2. What is the estinated change in the companys net operating income if it can increase sales volume by 350 unlis and total sales by $1,400? ? Note: Do not round intermediate calculations