Whirly Corporation's contribution format income statement for the most recent month is shown below: 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 7,200 units? Lin Corporation has a single product whose selling price is $135 per unit and whose variable expense is $81 per unit. The company's monthly fixed expense is $23,580. Required: 1. Calculate the unit sales needed to attain a target profit of $4,500. (Do not round intermediate calculations.) 2. Calculate the dollar sales needed to attain a target profit of $9,500. (Round your intermediate calculations to the nearest whole number.) Mauro Products distributes a single product, a woven basket whose selling price is $15 per unit and whose variable expense is $12 per unit. The company's monthly fixed expense is $4,500. Required: 1. Calculate the company's break-even point in unit sales. 2. Calculate the company's break-even point in dollar sales. (Do not round intermediate calculations.) 3. If the company's fixed expenses increase by $600, what would become the new break-even point in unit sales? In dollar sales? (Do not round intermediate calculations.) Last month when Holiday Creations, Incorporated, sold 36,000 units, total sales were $144,000, total variable expenses were $102,240, and fixed expenses were $38,600. 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 sales volume by 300 units and total sales by $1,200 ? (Do not round intermediate calculations.)