BUSINESS: U.S. Computer Sales Recently, personal computer sales in the United States have been growing approximately linearly. In 2006 sales were 88.8 mil lion units, and in 2010 sales were 105.6 million units.
a. Use the two (year, sales) data points (1, 88.8) and (5, 105.6) to fi nd the linear relationship y = mx + b between x = years since 2005 and y = sales (in millions).
b. Interpret the slope of the line.
c. Use the linear relationship to predict sales in the year 2020.
Source: Euromonitor International
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