Answer
$S=0.8L$
Work Step by Step
$Sale~price=list~price-discount$
$S=L-discount$
But, $discount=20$% of $list~price$
$discount=0.2L$
$S=L-0.2L=0.8L$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 2 - Review Exercises - Page 233: 13
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