Chloro- fluorocarbons (CFCs) are gases that might increase the greenhouse effect. The following table lists future concentrations

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Chloro- fluorocarbons (CFCs) are gases that might increase the greenhouse effect. The following table lists future concentrations of CFC-12 in parts per billion (ppb) if current trends continue.image


(a) Find values for C and a so that f(x) = Cax models these data, where x is years after 2000. 


(b) Estimate the CFC-12 concentration in 2013.

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