Answer
$\{a,b,c,d,e\}$
Work Step by Step
The elements either in $A$ or $B$ (or both) are: $A\cup B=\{a,b,c,d,e\}$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 4 - Section 4.5 - Linear Programming - Review Exercises - Page 309: 11
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