College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.2 - Algebra Essentials - R.2 Assess Your Understanding - Page 29: 152

Answer

$ a.\quad$ acceptable. $ b.\quad$not acceptable.

Work Step by Step

a. Does $x=214$ satisfy $|x-220|\leq 8\quad ?$ $|214-220|=|-6|=6.$ Since $6\leq 8$, the voltage of $214$ Volts is acceptable. b. Does $x=209$ satisfy $|x-220|\leq 8\quad ?$ $|209-220|=|-11|=11.$ So, the voltage of $209$ Volts is not acceptable.
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