Question: AIR POLLUTION On an average summer day, the level of carbon monoxide (CO) in a city's air is 2 parts per million (ppm). An environmental protection agency's study predicts that, unless more stringent measures are taken to protect the city's atmosphere, the CO concentration present in the air will increase at the rate of
0.003t2 + 0.06t + 0.1
Ppm/year, t yr from now. If no further pollution-control efforts are made, what will be the CO concentration on an average summer day 5 yr from now?