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In: Math

20) For the given cost function C(x)=22500+800x+x2, First, find the average cost function. Use it to...

20) For the given cost function C(x)=22500+800x+x2,

First, find the average cost function. Use it to find:

a) The production level that will minimize the average cost?

21) Given the function f(t)=(t−3)(t+7)(t−6).

its f-intercept is  

its t-intercepts are

b) The minimal average cost?

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