Requlred: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 15% ? 2. What is the revised net operating income if the selling price decreases by $1.20 per unit and the number of units sold Increases by 18% ? 3. What is the revised net operating income if the selling price increases by $1.20 per unlt, fixed expenses increase by $9,000, and the number of units sold decreases by 6% ? 4. What is the revised net operating income if the selling price per unit increases by 10%, varlable expenses Increase by 30 cents per unit, and the number of units sold decreases by 9%