The cash flow statements for Google, Inc. spanning the period are found here: . Answer the following questions using the information found in these statements: a. Is Google generating positive cash flow from its operations? b. How much did Google invest in new capital expenditures over the period? c. Describe Google's sources of financing in the financial markets over the period? d. Based solely on the cash flow statements for 2011 through 2014, write a brief narrative that describes the major activities of Google's management team over the period. \begin{tabular}{lrrrr} (US\$ millions) & 12/31/2014 & 12/31/2013 & 12/31/2012 & 12/31/2011 \\ Net income & $14,451 & $12,944 & $10,750 & $9,783 \\ Depreciation & 3,474 & 2,797 & 1,960 & 1,431 \\ Amortization & 1,470 & 1,191 & 966 & 484 \\ Deferred taxes & (127) & (406) & (252) & 352 \\ Noncash items & 2,664 & 2,235 & 2,274 & 1,994 \\ Changes in working capital & 368 & (38) & 942 & 622 \\ Cash from operating activities & $22,300 & $18,723 & $16,640 & $14,666 \\ \cline { 2 - 5 } Capital expenditures & $(10,902) & $(7,327) & $(3,257) & $(3,431) \\ Other investing cash flow items & (10,080) & (6,348) & (9,755) & (15,624) \\ \multicolumn{1}{c}{ Cash from investing activities } & $(20,982) & $(13,675) & $(13,012) & $(19,055) \\ Interest and financing cash flow items & $(1,461) & $(349) & $(90) & $81 \\ Total cash dividends paid & 0 & 0 & 0 & 0 \\ Issuance (retirement) of stock & 4 & 0 & 50 & 0 \\ Issuance (retirement) of debt & (11) & (593) & 1,358 & 773 \\ \multicolumn{1}{c}{ Cash from financing activities } & $(1,468) & $(942) & $1,318 & $854 \\ Foreign exchange effects & $(480) & $(1) & $4 & $25 \\ \multicolumn{1}{c}{ Net change in cash } & $(630) & $4,105 & $4,950 & $(3,510) \end{tabular}