Answer
$0.69x+0.89x=30$.
Work Step by Step
As in the example, an equation is: $0.69x+0.89x=30$.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 2 Linear Equations and Functions - 2.4 Write Equations of Lines - Guided Practice for Example 6 - Page 101: 10
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