End-of-year data for the number of Facebook users (in millions) from 2008 through 2011 are given in the following table. Year 2008 2009 2010 2011 Number, y 154.5 381.8 654.5 845.0 (a) Letting x = 0 denote the end of 2008, find an equation of the least-squares line for these data. y = (b) Use the result of part (a) to project the number of Facebook users at the end of 2016, assuming that the trend continues. (Round your answer to one de

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End-of-year data for the number of Facebook users (in millions) from 2008 through 2011 are given in the following table.
Year
2008
2009
2010
2011
Number, y
154.5
381.8
654.5
845.0
(a) Letting x = 0 denote the end of 2008, find an equation of the least-squares line for these data.
y =
(b) Use the result of part (a) to project the number of Facebook users at the end of 2016, assuming that the trend continues. (Round your answer to one decimal place.)
million users
Transcribed Image Text:End-of-year data for the number of Facebook users (in millions) from 2008 through 2011 are given in the following table. Year 2008 2009 2010 2011 Number, y 154.5 381.8 654.5 845.0 (a) Letting x = 0 denote the end of 2008, find an equation of the least-squares line for these data. y = (b) Use the result of part (a) to project the number of Facebook users at the end of 2016, assuming that the trend continues. (Round your answer to one decimal place.) million users
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