Posted by **Lex** on Friday, April 26, 2013 at 4:28pm.

C(x)=450x+5000, R(x)=-3x^2+900x for 20<x<150 where x>=20

- math 115 -
**bobpursley**, Friday, April 26, 2013 at 6:37pm
what is the question?

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