Finding Marginal Cost and Marginal Average Cost

A company that makes Barbara Dolls makes an accessory box for their Barbara Dolls. The weekly cost function, in dollars, for producing the accessory boxes for the Barbara Dolls is given by \(C(x)=90+6x+0.04x^2\), where \(x\) is the number of boxes produced, find and interpret each of the following.

1. \(C'(250)\)
2. \(\overline{C}'(250)\)

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