Question 7: Whirly Corporation's contribution format Income statement for the most recent month is shown below: Salos (7,300 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 233,600 138,700 94,900 55,500 $ 39,400 Per Unit $ 32.00 19.00 13.00 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 70 units? 2. What would be the revised net operating income per month if the sales volume decreases by 70 units? 3. What would be the revised net operating income per month if the sales volume is 6,300 units? Question 8 Last month when Holiday Creations, Inc., sold 45,000 units, total sales were $290,000, total variable expenses were $232,000, and fixed expenses were $39,500. 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 $1,700? Question 9 Data for Hermann Corporation are shown below: Selling price Variable expenses Contribution margin Per Unit $ 105 63 $ 42 Percent of Sales 100% 60 40% Fixed expenses are $81.000 per month and the company is selling 3,800 units per month Required: 1-a. How much will net operating income increase (decrease) per month if the monthly advertising budget increases by $8.600 and monthly sales increase by $18.900? 1-6. Should the advertising budget be increased