drockn5711 drockn5711 27-05-2023 Mathematics contestada 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).
