Answer
See below.
Work Step by Step
If the variables vary directly, then $w=ad$ for some constant $a$. Plugging in the given values, here $1800=a\cdot0.5\\a=3600$.
Thus the equation is: $w=3600d$.
Thus if $d=1.75$, then $w=3600\cdot1.75=6300$
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 - 2.5 Model Direct Variations - 2.5 Exercises - Problem Solving - Page 110: 39
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