In the problem, assume that the data can be modeled by a straight line and that the trend continues indefinitely. Use two data points to find such a line and then answer the question.
Business Forrester Research, Inc., estimated the amount of online retail sales to be $132.1 billion in 2006 and $271.1 billion in 2011. Let x = 0 correspond to 2006, and estimate the amount of online retail sales in 2010.
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