Mathematics, 20.12.2020 01:30 Demondevilg
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.
n=1.76t^2 - 13.32t + 41.00
Estimate the number of days the AQI exceeded 100 in the year 2002. Round to the nearest whole day. (Hint: t = 0 corresponds to the year 1990.)
option A. 281 days
option B. 97 days
option C. 135 days
option D. 52 days
Answers: 2
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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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