Mathematics, 27.07.2019 20:00 elisakate8362
The air quality index, or aqi, measures how polluted the air is in your city and assigns a number based on the quality of the air. over 100 is "unhealthy". the following quadratic regression equation, models the aqi over time, where n represents the number of days the aqi exceeded 100, and t represents the number of years since 1990.
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The air quality index, or aqi, measures how polluted the air is in your city and assigns a number ba...
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