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July 28, 2014

July 28, 2014

Posted by **number theory** on Wednesday, March 27, 2013 at 1:28am.

C(N)=0.04N2−36N+9000

If he wants to minimize the total cost of buying shirts, how many shirts should he buy?

- maths -
**Reiny**, Wednesday, March 27, 2013 at 7:54amI will assume you meant:

C(n) = .04n^2 - 36n + 9000

C ' (n) = .08n - 36

= 0 for a min of C

.08n = 36

n = 450

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