The bar graph shows the total amount Americans paid in federal taxes, in trillions of dollars, and the U.S population, in millions, from 2012 through 2015. Exercises 115-116 are based on the numbers displayed by the graph.
Sources: Internal Revenue Service and U.S. Census Bureau
a. In 2015, the United States government collectedS3.18 trillion in taxes. Express this number in scientific notation.
b. In 2015, the population of the United States was approximately 320 million. Express this number in scientific notation.
c. Use your scientific notation answers from parts (a)and (b) to answer this question: If the total 2015 tax collections were evenly divided among all Americans, how much would each citizen pay? Express the answer in decimal notation, rounded to the nearest dollar.
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