Miller Companys contribution format income statement for the most recent month is shown below: Total Per Unit Sales (21,600 units) $ 194,400 $ 9.00 Variable expenses 116,640 5.40 Contribution margin 77,760 $ 3.60 Fixed expenses 45,360 Net operating income $ 32,400 Required: (Consider each of the four requirements independently): Assume the sales volume increases by 3,456 units: What is the revised net operating income? What is the percent increase in unit sales? Using the most recent months degree of operating leverage, what is the percent increase in net operating income? What is the revised net operating income if the selling price decreases by $1.10 per unit and the number of units sold increases by 18%? What is the revised net operating income