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Discuss case of air pollution the amount of nitrogen dioxide

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Reference no: EM131561045

Question: Air pollution the amount of nitrogen dioxide, a brown gas that impairs breathing, present in the atmosphere on a certain may day in the city of long beach is approximated by

A(t) =              136       + 28                (0 ≤ t ≤ 11)        
         1 + 0.25(t - 4.5)2

Where a(t) is measured in pollutant standard index (psi) and t is measured in hours, with t = 0 corresponding to 7 a.m. Find the intervals where a is increasing and where a is decreasing and interpret your results.

Reference no: EM131561045

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