#### Answer

$C(N)=15000+800,000t-40000t^2$

#### Work Step by Step

We have:
$N(t)=100t-5t^2$ and $c(N)=15000+8000N$
Therefore, the composite function will be:
$C(N)=C[N(t)]=C(t) \\ =15000+8000N \\ =15000+8000(100t-5t^2) \\=15000+800,000t-40000t^2$

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Published by
Pearson

ISBN 10:
0-32193-104-1

ISBN 13:
978-0-32193-104-7

$C(N)=15000+800,000t-40000t^2$

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