Chapter 5: Q8. (page 226)
Simplify assuming that no variable equal to 0 .
Short Answer
The simplified value of expression is .
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Chapter 5: Q8. (page 226)
Simplify assuming that no variable equal to 0 .
The simplified value of expression is .
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Express the number in scientific notation.
TRANSPORTATION For Exercises 74–76, refer to the graph at the right. (Lesson 2-5)
Predict the median age of vehicles on the road in 2010.

CRITICAL THINKING For Exercises 61 and 62, use the following proof of the Power of a Power Property.

What definition or property allows you to make each step of the proof?
WritinginMATH Answer the question that was posed at the beginning of the lesson.
Why is scientific notation useful in economics?
Include the following in your answer:
• the2000 national debt of and the U.S. population of
both written in words and in scientific notation, and
• an explanation of how to find the amount of debt per person, with the
result written in scientific notation and in standard notation.
Simplify assuming that no variable equal to 0 .
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