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Mathematics
Problem
The weekly revenue (in dollars) from selling
q
q
q
digital subscriptions is modeled by
R
(
q
)
=
−
q
2
+
40
q
+
1000
,
0
≤
q
≤
50.
R(q)=-q^{2}+40q+1000, \quad 0\le q\le 50.
R
(
q
)
=
−
q
2
+
40
q
+
1000
,
0
≤
q
≤
50.
For what number of subscriptions is the revenue maximized? a)
q
=
25
q=25
q
=
25
b)
q
=
20
q=20
q
=
20
c)
q
=
10
q=10
q
=
10
d)
q
=
40
q=40
q
=
40
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