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Mathematics
Problem
The cost (in dollars) of producing
q
q
q
widgets is modeled by
C
(
q
)
=
800
+
0.4
q
2
.
C(q)=800+0.4q^{2}.
C
(
q
)
=
800
+
0.4
q
2
.
What is the marginal cost when production is at 50 widgets? a)
36
36
36
per widget b)
0.80
0.80
0.80
per widget c)
40
40
40
per widget d)
20
20
20
per widget
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