Use the Atmospheric Carbon Dioxide Concentration scatterplot below to answer the questions. Atmospheric Carbon Dioxide Concentration 1970-2012 400.00 380.00 360.00 2011, 391.63 340.00 y = 1.6178x - 2864.6 R = 0.994 320.00 300.00 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 Year What is the independent variable and what does it represent? years y=1.6178 x- 2864.6 CO2 in ppm R^2 = 0.994 not able to determine CO2 in ppm

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