drockn5711 drockn5711
  • 27-05-2023
  • Mathematics
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The ozone level (in parts per billion) on a summer day in a certain metropolitan area is given by P(t)=170+18t−2t^2 , where t is time in hours and t=0 corresponds to 9 AM.
(A) Use the four-step process to find P′(t).
(B) Find P(4 ) and P′(4).

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