Posted by Tenshi on Tuesday, April 29, 2014 at 8:45pm.
The marginal cost of manufacturing x yards of a certain fabric is
C'(x) = 3 − 0.01x + 0.000012x2
(in dollars per yard). Find the increase in cost if the production level is raised from 2000 yards to 4000 yards.
$186,000

Calculus Help and Check  Damon, Tuesday, April 29, 2014 at 8:58pm
calculate C' = dC/dx at x = 2000
then dC = C' dx
dC = C' (40002000)
C' = 3  20 + 40 = 23
dC = 23 (2000) = 46,000

Calculus Help and Check  erik, Friday, November 21, 2014 at 12:58am
58,000

Calculus Help and Check  Zachary, Wednesday, December 10, 2014 at 10:07pm
both answers are wrong
correct answer = $170,000
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