The population P, in hundreds, of a small mining town in the California Gold Rush, is 36 given by the function P = f(t), where t is in years 30 since 1850. Use the graph of f(t) to answer the 24- following 18- a) When did the population of the town reach 12- zero? b) Find two different time intervals for which the average rate of change of P with respect to t 6 9 12 15 18 was zero. a) The year the population of the town reached zero is | b) Using the points indicated on the graph of f(t), the interval with the shorter time span where the average rate of change was zero is from the year | to the year | ], a span of ] years. Using the points indicated on the graph of f(t), the interval with the longer time span where the average rate of change was zero is from the year to the year [ ], a span of ] years. V I. More Enter your answer in each of the answer boxes. MacBook Air aBa DAI # & 3 5 8