Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.2 The Integers; Order of Operations - Exercise Set 5.2 - Page 270: 122

Answer

The person who regularly answers puzzles will stretch his/her lifespan by 5 years, while the person who frequently feel stressed will shrink his/her lifespan by 5 years. If the situation talks about the same person, then the lifespan will neither stretch nor shrink.

Work Step by Step

The person who regularly answers puzzles will stretch his/her lifespan by 5 years, while the person who frequently feel stressed will shrink his/her lifespan by 5 years. If the situation talks about the same person, then the net effect on his/her lifespan is: $=5+(-5) =0$
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