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30. -/0.32 points TanApCalcBr10 4.1.090 My Notes Ask Your Teacher According to an Air Quality Management District, the level of nitrogen dioxide, a brown gas that impairs breathing, present in the atmosphere on a certain May day in a busy downtown city is approximated by A(t) 0.03t3(t 7)4 66.3 (0 sts 7) where A(t) is measured in pollutant standard index (PSI) and t is measured in hours, with t = 0 corresponding to 7 a.m. At what time of day is the air pollution increasing, and at what time is it decreasing? (Enter your answers using interval notation in terms of t.) increasing decreasing Show transcribed image text
30. -/0.32 points TanApCalcBr10 4.1.090 My Notes Ask Your Teacher According to an Air Quality Management District, the level of nitrogen dioxide, a brown gas that impairs breathing, present in the atmosphere on a certain May day in a busy downtown city is approximated by A(t) 0.03t3(t 7)4 66.3 (0 sts 7) where A(t) is measured in pollutant standard index (PSI) and t is measured in hours, with t = 0 corresponding to 7 a.m. At what time of day is the air pollution increasing, and at what time is it decreasing? (Enter your answers using interval notation in terms of t.) increasing decreasing
Show transcribed image text Lelia LubowitzLv2
5 Sep 2019