11. DETAILS TANAPCALCBR10 4.4.058. MY NOTES | ASK YOUR Tl 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 127 A = -- (t) 1 + 0.28(t (5)2 +29 (osts 11) where A(t) is measured in pollutant standard index (PSI) and t is measured in hours, with t = 0 corresponding to 7 AM. Determine the time of day when the pollution is at its highest level. Submit Answer 11. DETAILS TANAPCALCBR10 4.4.058. Air Pollution The amount of nitrogen dioxide, a brown 127 A(t) = 1 + 0.28(t - 6)2 + 29 (0