Here's one more that I do not understand

Question

A company estimates that the cost ($) of producing x units of a certain product is given by:

C= 800 + .04x + .0002x^2

Find the production level that minimizes the average cost per unit.

Thank you so much

Answer 1

your question makes no sense.
clearly C is increasing as x increases, and C will have a minimum of 800 when x = 0
Their best bet would be not to make any ???

check your typing, I think it should be -.002x^2 perhaps?

Answer 2

Sorry for the typo - you are correct it should be -.002x^2

Answer 3

in that case, very easy
dC/dx = .04 - .004x
= 0 and solve for x

x = .004/.04 = ...

Answer 4

I still do not see what the answer would be . Is x = .001