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OpenStudy (anonymous):
At the Mauna Loa Observatory, measurements of CO2 levels (ppm) in the atmosphere reveal a slow exponential increase due to deforestation and burning of fossil fuels, and a periodic seasonal variation. In 1960, the average CO2 level was 320.50 parts per million and was rising by 0.5% per year. Write the average annual CO2 level as an exponential function of time, t, in years since 1960.
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