Question

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. Given the following quadratic regression equation, models the AQI over time where n represents the number of days AQI exceeded 100, and t represents the number of years since 1990 . n = 1.76t^2 - 13.32t + 41.00 (let t represent the number of years since 1990. (n=1.76t^2 - 13.32t+41.00) estimate the number of days AQI exceed 100 in year 2002 round to the nearest whole day (T=0 corresponds with to the year 1990 A. 281 days B. 97 days
c. 135 days d. 52 days

Answer 1

So, its B.