Answer
$= -0.48$
Work Step by Step
We first plug in the values given for the variables, and then we solve:
$0.2x - 0.3y - xy$
$= 0.2(0.4) - 0.3(0.8) - (0.4)(0.8)$
$= 0.08 - 0.24 - 0.32$
$= 0.08 - 0.56$
$= -0.48$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 2 - Real Numbers - Chapter 2 Test - Page 90: 21
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