12. In the year 2011, the population of the town of Bend, OR was 75,841 people. In 2019, the population increased to 93,917 people. Assume that the population is increasing exponentially. a. By what percentage did the population increase over the 8-year period from 2011 to 2019? b. By what percentage did the population increase each year over this period? c. Define an exponential function f that determines the population of Bend as a function of

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