Answer
The price increased by 75%.
Work Step by Step
Percent change $=\frac{70-40}{40}=\frac{30}{40}=\frac{3}{4}=0.75=75\%$
The price increased by 75%.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 7 - Exponents and Exponential Functions - 7-8 Geometric Sequences - Practice and Problem-Solving Exercises - Page 472: 65
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