Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.7 - Combinations of Functions; Composite Functions - Exercise Set - Page 260: 111


makes sense

Work Step by Step

This statement makes sense because the total world population $f$ can be divided into the population of the more-developed regions $g$ and the less-developed regions $h$. Thus, we have $h=f-g$ and the domain consists of $x$ values in both $f$ and $g$.
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