The cost C (in dollars) of manufacturing x wheels at Mai's Bicycle Supply is given by the function c(x)=0.5x^2-170x+23,870.
. How many wheels must be made to minimize the cost?
Do not round your answer

Question

The cost C (in dollars) of manufacturing x wheels at Mai's Bicycle Supply is given by the function      c(x)=0.5x^2-170x+23,870.
. How many wheels must be made to minimize the cost? 
Do not round your answer

er.mohd.amir · Answer

use diff.calculas 
d/dx{c(x)=0.5*2*x-170
equating to zero give x=170

anonymous · Answer

@Er.Mohd.AMIR  ty

mathmate · Answer

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mathmate · Answer

If you do not use calculus, it can be found by completing the square:
c(x)=ax^2-bx+c       
then the minimum occurs at   b/(2a) = 170/(2*(1/2))=170.