Whirly Corporationâs contribution format income statement for the most recent month is shown below: Total Per Unit Sales (7,400 units) $ 259,000 $ 35.00 Variable expenses 133,200 18.00 Contribution margin 125,800 $ 17.00 Fixed expenses 55,600 Net operating income $ 70,200
Required:
(Consider each case independently):
1. What would be the revised net operating income per month if the sales volume increases by 100 units?
2. What would be the revised net operating income per month if the sales volume decreases by 100 units?
3. What would be the revised net operating income per month if the sales volume is 6,400 units?

The monthly demand equation for an electric utility company is estimated to be p equals 60 minus left parenthesis 10 superscript negative 5 baseline right parenthesis x, where p is measured in dollars and x is measured in thousands of killowatt-hours. the utility has fixed costs of $3 comma 000 comma 000 per month and variable costs of $32 per 1000 kilowatt-hours of electricity generated, so the cost function is upper c left parenthesis x right parenthesis equals 3 times 10 superscript 6 baseline plus 32 x. (a) find the value of x and the corresponding price for 1000 kilowatt-hours that maximize the utility's profit. (b) suppose that the rising fuel costs increase the utility's variable costs from $32 to $38, so its new cost function is upper c 1 left parenthesis x right parenthesis equals 3 times 10 superscript 6 baseline plus 38 x. should the utility pass all this increase of $6 per thousand kilowatt-hours on to the consumers?