Answer
z = k$x^{2}$$y^{3}$
Work Step by Step
When variables vary jointly, the variables are directly proportional, so y = x.
In this example, z = k$x^{2}$$y^{3}$ where k is a constant.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 3 - 3.5 - Mathematical Modeling and Variation - 3.5 Exercises - Page 296: 44
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