Using the following time series data of U.S. new car sales ($ millions), respond to the following items. (The data is sourced from https://www.census.gov/retail/index.html#mrts. Find "Monthly Retail Trade Report," then select “Time Series/Trend Charts" to find th data for U.S. new car sales.). $ Sales (Millions) 2009 $ 486,565 Year 2010 549,473 608,790 672,550 735,374 785,142 842,120 877,743 911,157 2011 2012 2013 2014 2015 2016 2017

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