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In t'years, the population of a certain city grows from 500,000 to a size P...

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In t'years, the population of a certain city grows from 500,000 to a size P given by P(t) = 500,000 + 7000t.a) Find the growth rate, dP/dtb) Find the population after 20 yr.c) Find the growth rate at t=20.d) Explain the meaning of the answer to part (c).a) dP/dt=b) The population after 20 yr is.(Simplify your answer.)c) The growth rate at t = 20 is(Simplify your answer.)d) What is the meaning of the answer to part (c)?A. The growth rate tells the difference between the rate of growth at the beginning of t=0 and t = 20.B. The growth rate tells the average growth from time t = 0 and t = 20.C. The growth rate tells the rate at which the population is growing at time t=20-1.D. The growth rate tells the rate at which the population is growing at time t = 20.

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