The average price of a gallon of gas in 2013 dropped $0.12 (3 percent) from $3.61 in 2012 (to $3.49 in 2013). Required: 1. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages for the income statement of Chevron Corporation for the year ended December 31, 2013 (amounts in billions). (Decreases should be indicated by a minus sign. Enter your answers in billions (i.e., 10,000,000,000 should be entered as 10). Round your percentage answers to 1 decimal place.)

CHEVRON CORPORATION
Income Statements
(dollars in billions)
For the Year Ended December 31
			Change in
	2013	2012	Dollars	Percentage
Total Revenues	$225	$242			%
Costs of Crude Oil and Products	119	127			%
Other Operating Costs	59	52			%
Income before Income Tax Expense	47	63			%
Income Tax Expense	21	26			%
Net Income	$26	$37			%

2-a. Conduct a vertical analysis by expressing each line as a percentage of total revenues. (Round your percentage answers to 1 decimal place.)

CHEVRON CORPORATION
Income Statements
(dollars in billions)
For the Year Ended December 31
	2013			2012
Total Revenues	$225		%	$242		%
Costs of Crude Oil and Products	119		%	127		%
Other Operating Costs	59		%	52		%
Income before Income Tax Expense	47		%	63		%
Income Tax Expense	21		%	26		%
Net Income	$26		%	$37		%

2-b. Excluding income tax and other operating costs, did Chevron earn more profit per dollar of revenue in 2013 compared to 2012?

	Yes
	No