Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 18% ? 2. What is the revised net operating income if the selling price decreases by $1.20 per unit and the number of units sold increased by 25%? 3. What is the revised net operating income if the selling price increases by $1.20 per unit, fixed expenses increose by $8.000, 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 20%, variable expenses increase by 20 cents per unit. and the number of units sold decreases by 11% ? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income