Answer
This represents frequency.
Work Step by Step
The frequency is the inverse of the period. Thus, from the period calculation in number 3:
$$f=\frac{1}{4}=.25$$
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 14 Trigonometric Graphs, Identities, and Equations - Chapter Review - Page 965: 5
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