Answer
true
Work Step by Step
$A\cup B$ is the union of A and B. The union contains any element that is a member of either A or B. Since x is an element of A, it is also an element of the union of the two sets.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 3 - Solving Inequalities - 3-8 Unions and Intersections of Sets - Lesson Check - Page 218: 8
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