#### Answer

$y=2.0$

#### Work Step by Step

$0.8y+0.2(y-1)=1.8$
$0.8y+0.2y-0.2=1.8$
$1.0y-0.2=1.8$
Adding $0.2$ to both sides, $1.0y-0.2+0.2=1.8+0.2$
$1.0y=2.0$
Divide both sides by $1.0$: $y=2.0$.

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$y=2.0$

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