Answer
$C=kab^2$
Work Step by Step
Recall:
If $y$ varies jointly as $x$and $z$, then, $y=kxz$ where $k$ is the constant of variation.
Since $C$ varies jointly as $a$ and $b^2$, then, with $k$ as a constant of variation,
$$C=kab^2$$
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 6 - Section 6.6 - Variation - 6.6 Exercises - Page 418: 34
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