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a 5 year projection of population trends suggest that t years from now, the population of a certain community will be P(t)=-t3+9t2+48t+200.
a 5 year projection of population trends suggest that t years from now, the population of a certain community will be P(t)=-t3+9t2+48t+200. find the rate of change of population R(t)=P'(t) with respect to time t.