12. International Trade The following table shows South Korea's petrochemical exports to China (in billions of dollars) for several years. I Year Petrochemical exports Let x ||nmama 2010 2011 16 21 2012 2013 2014 21 23 21.4 10 correspond to the year 2010. Two equations that 1.35x + 2.5 and y = 2x − 3 (Data model these data are y from: The Wall Street Journal.)

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