Answer
true
Work Step by Step
RECALL:
$E \subseteq C$ if all elements of $E$ are also elements of $C$
Note that the elements of $E$, 3 and 7, are also elements of $C$.
Thus, the given statement is true.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - Chapter R Test Prep - Review Exercises - Page 81: 10
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