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December 20, 2014

December 20, 2014

Posted by **Britney** on Wednesday, November 14, 2012 at 4:09pm.

C(x)=0.2(0.01x^2+133)

? units

- math -
**Steve**, Wednesday, November 14, 2012 at 4:53pmaverage cost = totalcost/number of units

a(x) = C(x)/x

= 0.2(0.01x + 133/x)

minimum avg cost is where a'(x) = 0

a'(x) = .02(.01 - 133/x^2)

x = 10√133 = 115.3, so 115

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