Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-10 Change Expressed as a Percent - Practice and Problem-Solving Exercises: 11

Answer

There was a decrease of about $4\%$.

Work Step by Step

Change in value: $=\text{new amount} - \text{original amount} \\= 38.6-40.2 \\= -1.6$ There was a decrease. Percent Change: $ =\dfrac{\text{change in value}}{\text{original amount}} \\=\dfrac{-1.6}{40.2} \\\approx -0.04 \\\approx -4\%$ There was a decrease of around $4\%$.
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