Question 637105
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
C=0.4x^2+16x+10  x > 0
<span style="text-decoration: overline">C</span> = .4x + 16 + 10/x 
<span style="text-decoration: overline">C'</span> = .4  - 10/x^2
   .4 - 10/x^2 = 0
       x^2 = 10/.4 = 25 
         x = 5, units that should be produced to minimize the average cost per unit
{{{drawing(300,300,   -1, 6, -6, 100,  grid(1),

graph( 300, 300, -1, 6, -6, 100,0,.4x + 16 + 10/x  ))}}}