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Business The following table shows total operating revenue (in billions of dollars) for the U.S. airline industry for several years:
Year | 2002 | 2003 | 2004 | 2005 | 2006 |
Operating Revenue | 107 | 118 | 134 | 151 | 164 |
(a) Find the least-squares regression line, with x = 2 corresponding to 2002.
(b) Assuming the trend continues indefinitely, predict the operating revenue for 2010.
(c) Based on the model, when will operating revenue reach $180 billion?
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