Refer to Googles income statement and the detailed revenue table contained in Note 1 to answer the following questions: How has Googles revenue mix changed since 2011 on a relative (i.e. percentage) basis? What is the largest contributor to total advertising revenue? On a percentage basis, what was Googles revenue growth in fiscal 2012 and in 2013? What effect would excluding Motorola Mobile revenue have on your analysis? Which type of advertising revenue is exhibiting the stronger growth trend?

	Year Ended December 31,
	2011			2012			2013
Revenues:
Google (advertising and other)	$	37,905		$	46,039		$	55,519
Motorola Mobile (hardware and other)	0			4,136			4,306
Total revenues	$	37,905		$	50,175		$	59,825
Costs and expenses:
Cost of revenues - Google (advertising and other) (1)	13,188			17,176			21,993
Cost of revenues - Motorola Mobile (hardware and other) (1)	0			3,458			3,865
Research and development (1)	5,162			6,793			7,952
Sales and marketing (1)	4,589			6,143			7,253
General and administrative (1)	2,724			3,845			4,796
Charge related to the resolution of Department of Justice investigation	500			0			0
Total costs and expenses	26,163			37,415			45,859
Income from operations	11,742			12,760			13,966
Interest and other income, net	584			626			530
Income from continuing operations before income taxes	12,326			13,386			14,496
Provision for income taxes	2,589			2,598			2,282
Net income from continuing operations	$	9,737		$	10,788		$	12,214
Net income (loss) from discontinued operations	0			(51			706
Net income	$	9,737		$	10,737		$	12,920
Net income (loss) per share of Class A and Class B common stock - basic:
Continuing operations	$	30.17		$	32.97		$	36.7
Discontinued operations	0			(0.16			2.12
Net income (loss) per share of Class A and Class B common stock - basic	$	30.17		$	32.81		$	38.82
Net income (loss) per share of Class A and Class B common stock - diluted:
Continuing operations	$	29.76		$	32.46		$	36.05
Discontinued operations	0			(0.15			2.08
Net income (loss) per share of Class A and Class B common stock - diluted	$	29.76		$	32.31		$	38.13
(1) Includes stock-based compensation expense as follows:
Cost of revenues - Google (advertising and other)	$	249		$	359		$	469
Cost of revenues - Motorola Mobile (hardware and other)	0			14			18
Research and development	1,061			1,325			1,717
Sales and marketing	361			498			578
General and administrative	303			453			486
	$	1,974		$	2,649		$	3,268

Note 1. Google Inc. and Summary of Significant Accounting Policies

	Year Ended December 31,
	2011				2012				2013
Google:
Advertising revenues:
Google websites	$	26,145			$	31,221			$	37,422
Google Network Members' websites	10,386				12,465				13,125
Total advertising revenues	36,531				43,686				50,547
Other revenues	1,374				2,353				4,972
Total Google revenues (advertising and other)	$	37,905			$	46,039			$	55,519
Motorola Mobile:
Total Motorola Mobile revenues (hardware and other)	0				4,136				4,306
Total revenues	$	37,905			$	50,175			$	59,825