Posted by anonymous on .
when no more than 110 units are produced, the cost of producing x units is given by
C(x)=.2x^3  25x^2 + 1531x + 25,000
How many units should be produced in order to have the lowest possible average cost?

math 
Reiny,
C '(x) = .6x^2  50x + 1531
= 0 for a max/min of C
solve using the quadratic formula
This quadratic has no real roots, I will leave it up to you to interpret that result. 
math 
Anonymous,
may i ask how you came up with this equation? thank you

math 
Reiny,
I took the derivative.
Is this not from a Calculus course ? 
math 
Anonymous,
no its not. its from a business math course.but i think they're a pretty similar course?