Answer
$\frac{5}{6}.$
Work Step by Step
The equation here is $y=\frac{kx}{z^2}$. Thus $20=\frac{50k}{5^2}\\20=2k\\k=10$.
Hence $y=\frac{10x}{z^2}=\frac{10\cdot3}{6^2}=\frac{30}{36}=\frac{5}{6}.$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 6 - Section 6.8 - Modeling Using Variation - Exercise Set - Page 487: 5
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