In Example 1 on page 731, we used two data points and an exponential function to model
Chapter 9, Problem 47(choose chapter or problem)
In Example 1 on page 731, we used two data points and an exponential function to model the population of the United States from 1970 through 2009. The data are shown again in the table. Use all five data points to solve Exercises 4549. x, Number of Years after 1969 y, U.S. Population (millions) 1 (1970) 203.3 11 (1980) 226.5 21 (1990) 248.7 31 (2000) 281.4 40 (2009) 307.0 Use your graphing utilitys linear regression option toobtain a model of the form y = ax + b that fits the data.How well does the correlation coefficient, r, indicate thatthe model fits the data?
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