Answer: The bar graph shows the population of the United

Chapter 0, Problem 30

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The bar graph shows the population of the United States, in millions, for five selected years. Population (millions) 200 320 Population of the United States Year 1980 226.5 1990 248.7 2000 281.4 2010 309.3 240 280 160 120 80 1970 203.3 40 Source: U.S. Census Bureau a. Estimate the yearly increase in the U.S. population. Express the answer in millions and do not round. b. Write a mathematical model that estimates the U.S. population, p, in millions, x years after 1970. c. Use the mathematical model from part (b) to project the U.S. population, in millions, in 2020.

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