Solved: Public Debt The total public debt (in trillions of

Chapter , Problem 1.4.123

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Public Debt The total public debt (in trillions of dollars) in the United States at the beginning of each year from 2005 through 2011 can be approximated by the model where represents the year, with corresponding to 2000. (Source: U.S. Department of the Treasury) (a) Use the model to complete the table to determine when the total public debt reached $10 trillion. (b) Verify your result from part (a) algebraically and graphically. (c) Use the model to predict the total public debt in 2020. Is this prediction reasonable? Explain.

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