Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 2 - Section 2.5 - Formulas and Problem Solving - Exercise Set: 44

Answer

100 chirps per minute

Work Step by Step

Using the formula T = 50 + $\frac{N - 40}{4}$, substitute the value given into the equation. 65 = 50 + $\frac{N - 40}{4}$ Solve for N: 15 = $\frac{N - 40}{4}$ 60 = N - 40 100 = N Interpret: 100 chirps per minute
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