Answer
19
Work Step by Step
Solving the equation for x, we find:
$$\sqrt{4x+5} = 9 \\ 4x+5=9^2 \\4x+5=81\\ x=19$$
This solution satisfies the equation when plugged back in.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 11 Data Analysis and Statistics - 11.3 Use Normal Distributions - 11.3 Exercises - Mixed Review - Page 762: 50
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