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 50 units? 2. What would be the revised net operating income per month if the sales volume decreases by 50 units? 3. What would be the revised net operating income per month if the sales volume is 7,100 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 $24,300. Required: 1. Calculate the unit sales needed to attain a target profit of $4,050. (Do not round intermediate calculations.) 2. Calculate the dollar sales needed to attain a target profit of $8,300. (Round your intermediate calculations to the nearest whole number.)