Answer
9
Work Step by Step
Solving the equation by isolating the variable, we find:
$$2x=18\\ x=9$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 1 - Linear Functions and Change - 1.4 Formulas for Linear Functions - Exercises and Problems for Section 1.4 - Skill Refresher - Page 34: S2
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