Answer
10% decrease
Work Step by Step
Since the new amount is smaller, it is a decrease.
% decrease=$\frac{amount\ of\ change}{original\ amount}$
%decrease=$\frac{20-18}{20}=\frac{2}{20}=0.1=10\%$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 3 - Solving Inequalities - 3-1 Inequalities and Their Graphs - Mixed Review - Page 170: 70
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