Newlin Company's contribution format income statement for the recent month is shown below: Per Unit $ 31.00 18.00 Sales (7,900 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 244,900 142,200 102,700 55,800 $ 46,900 $ 13.00 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 80 units? 2. What would be the revised net operating income per month if the sales volume decreases by 80 units? 3. What would be the revised net operating income per month if the sales volume is 6,900 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income Last period Hartig Corporation sold 36,000 units, total sales were $307,000, total variable expenses were $221,040, and fixed expenses were $35,800. 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 $2,800? (Do not round intermediate calculations.) % 1. Contribution margin ratio 2. Estimated change in net operating income