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We have seen that the 2016 U.S. national debt was $18.9 trillion. InExercises 113-114, you will use scientific notation to put a numberlike 18.9 trillion in perspective.
113. a. Express 18.9 trillion in scientific notation.
b. Four years of tuition, fees, and room and board at apublic U.S. college cost approximately $60,000. Expressthis number in scientific notation.
c. Use your answers from parts (a) and (b) to determinehow many Americans could receive a free collegeeducation for $18.9 trillion.
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Thinking Mathematically (7th Edition)
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