Shown here is an income statement in the traditional format for a firm with a sales volume of 7,900 units. Cost formulas also are shown:

Revenues	$	34,500
Cost of goods sold ($5,600 + $2.2/unit)		22,980
Gross profit	$	11,520
Operating expenses:
Selling ($1,180 + $0.1/unit)		1,970
Administration ($3,550 + $0.2/unit)		5,130
Operating income	$	4,420

the optional account names for the three boxes under variable expense are:

Requirement 1:

Prepare an income statement in the contribution margin format. (Omit the "$" sign in your response.)

revenues		$
Variable expenses:
cost of good sold	$
selling expense
administrative expense
Total variable expenses
Contribution margin		$
Fixed expenses:
cost of good sold	$
admistratitve expenses
selling expenses
Total fixed expenses
operating income		$

Requirement 2:

Calculate the contribution margin per unit and the contribution margin ratio. (Omit the "$" and "%" signs in your response. Round contribution margin per unit to 2 decimal places and contribution margin ratio to whole number.)

Contribution margin per unit	$
Contribution margin ratio	%

Requirement 3:
(a)	Calculate the firm's operating income (or loss) if the volume changed from 7,900 units to 11,850 units. (Do not round your intermediate calculations. Round your answer to the nearest dollar amount. Omit the "$" sign in your response.)

operating income

$

(b)	Calculate the firm's operating income (or loss) if the volume changed from 7,900 units to 3,950 units. (Do not round your intermediate calculations. Round your answer to the nearest dollar amount. Input all amount as positive values. Omit the "$" sign in your response.)

operating income

$

Requirement 4:
Refer to your answer to requirement 1 for total revenues of $34,500.
(a)	Calculate the firm%u2019s operating income (or loss) if unit selling price and variable expenses per unit do not change, and total revenues increase by $10,500. (Do not round your intermediate calculations. Round your answer to the nearest dollar amount. Omit the "$" sign in your response.)

operating income

$

(b)

Calculate the firm's operating income (or loss) if unit selling price and variable expenses per unit do not change, and total revenues decrease by $3,000. (Do not round your intermediate calculations. Round your answer to the nearest dollar amount. Input the amount as positive value. Omit the "$" sign in your response.)

operating income

$