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Carbon dioxide CO2 is a greenhouse gas in the atmosphere that may raise average

ID: 3103039 • Letter: C

Question

Carbon dioxide CO2 is a greenhouse gas in the atmosphere that may raise average temperatures on earth. The burning of fossil fuels could be responsible for the increased levels of carbon dioxide. If current trends continue, future concentrations of atmospheric carbon dioxide in parts per million (ppm) could reach the levels shown in the accompanying table. The CO2 concentration in the year 2000 was greater than it had been at any time in the previous 160000 years.

Year                   2000      2050      2100      2150    2200

CO2(ppm)           364        467       600        769       987


Let x be in years where x=0 corresponds to 2000 x=1 corresponds to 2001 and so on. Find values for C and a so that f(x)=Ca^2

Explanation / Answer

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