Question 1110282
Hello, I would like some help solving this word problem! 
The level of air pollution varies throughout the day during summer. The function P(t)= 0.1t^2-0.4t+0.6 measures the air pollution, "P" measured in parts per million, with respect to time, "t" in hours, where 9AM=0 
A) Find the average rate of change of air pollution between noon and 5PM.
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Average = [P(5)-P(0)]/[5-0] = [0.1*25-0.4*5+0.6 - (0-0+0.6)]/5 = 0.1
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B) Find the rate of change at 5PM and interpret the meaning of your result.
P'(t) = 2*0.1t-0.4
P'(5) = 2*0.1*5-0.4 = 0.6
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Cheers,
Stan H.
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