In 2009 the number of vehicle sales in the United States was 10,602 and in 2013 it was 15,884. determine the average rate of change from 2009 to 2013. if x is the number of years since 2009 and f(x) is the number of vehicles sold, find the equation of the line through these two points. assuming f(x) is a linear function, use the equation to predict the number of vehicles sold in 2016.

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In 2009 the number of vehicle sales in the United States was 10,602 and in 2013 it was 15,884.

  1. determine the average rate of change from 2009 to 2013.
  2. if x is the number of years since 2009 and f(x) is the number of vehicles sold, find the equation of the line through these two points.
  3. assuming f(x) is a linear function, use the equation to predict the number of vehicles sold in 2016.
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