Answer
$\frac{7}{3}$.
Work Step by Step
$0.25(0.4x+0.8)=3.7-1.4x$, multiply both sides by 10,
$0.25(4x+8)=37-14x$,
$x+2=37-14x$,
$15x=35$,
$x=\frac{7}{3}$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 5 - Trigonometric Functions - Section 5.6 Phase Shift; Sinusoidal Curve Fitting - 5.6 Assess Your Understanding - Page 454: 42
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