The bar graph shows the number of smartphones sold in the United States from 2004
Chapter 2, Problem 69(choose chapter or problem)
The bar graph shows the number of smartphones sold in the United States from 2004 through 2010. 320 240 120 280 200 160 80 Number of Smartphones Sold (millions) Number of Smartphones Sold in the United States Year 2010 296.6 2009 172.4 2008 139.3 2007 88.6 2006 60.1 2005 40.8 2004 40 15.8 Source: Newsweek, April 11, 2011 a. Let x represent the number of years after 2004 and let y represent the number of smartphones sold, in millions, in the United States. Create a scatter plot that displays the data as a set of seven points in a rectangular coordinate system. b. Draw a line through the two points that show the number of smartphones sold in 2005 and 2010. Use the coordinates of these points to write the lines equation in point-slope form and slope-intercept form. c. Use the slope-intercept form of the equation from part (b) to project the number of smartphones sold in the United States in 2015.
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