Answer
$\approx 1872.5$ calories
Work Step by Step
Need to find $f(80)$.
Here, $f(x)=70x^{3/4}$
Plug $x=80$ in the above expression.
we have
$f(80)=70(80)^{3/4} \approx 1872.5$ calories
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 7 - Section 7.2 - Rational Exponents - Exercise Set - Page 523: 127
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