Solved: The table gives the population of the world in the 20th century. (a) Estimate
Chapter 3, Problem 27(choose chapter or problem)
The table gives the population of the world in the 20th century. (a) Estimate the rate of population growth in 1920 and in 1980 by averaging the slopes of two secant lines. (b) Use a graphing calculator or computer to find a cubic function (a third-degree polynomial) that models the data. (c) Use your model in part (b) to find a model for the rate of population growth in the 20th century. (d) Use part (c) to estimate the rates of growth in 1920 and 1980. Compare with your estimates in part (a). (e) Estimate the rate of growth in 1985.
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