# Question

From 2000 through 2007, the value of U.S. exports to Mexico was as shown below. Data are in billions of dollars.
a. Fit a linear trend equation to the time series. Using this equation, determine the trend estimate for 2015.
b. Fit a quadratic equation to the time series, then use the equation to determine the trend estimate for 2015.
c. Construct a graph of the time series along with the equations fitted in parts (a) and (b). Which equation appears to better fit the data?

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