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Nitrogen dioxide, NO₂, is an air pollutant resulting from burning fossil fuels in cars and power plants. The following table shows the decrease in the national average of the concentration
in parts per billion (ppb) of NO₂ for selected years.
Year
2014
2015
2016 2017
2018
NO₂ (ppb) 40.8107 39.7886 38.7972 37.8209 36.8752
Use exponential regression to find an exponential decay function for the concentration, C, of NO₂ t years after 2014. Round constants to the nearest ten-thousandth.
C =
Use the model to predict the concentration of NO2 (in ppb) in 2020. Round to the nearest whole number.
ppb
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