Solved: In Example 1 on page 731, we used two data points and an exponential function to
Chapter 9, Problem 49(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 the values of r in Exercises 4548 to select thetwo models of best fit. Use each of these models topredict by which year the U.S. population will reach352 million. How do these answers compare to the yearwe found in Example 1, namely 2020? If you obtaineddifferent years, how do you account for this difference?
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