A company provides carousel rides for,
a
, adults and,
c
, children. The company charges
$
12
for each adult and
$
7.50
for each child. The company can have as many as
36
people and needs to take in a minimum of
$
325
to make a profit. Which of the following systems of equations represents the situation?

12
a
+
7.50
c
≤
325
a
+
c
≤
36
12
a
+
7.50
c
>
325
a
+
c
<
36
12
a
+
7.50
c
≥
325
a
+
c
≤
36
12
a
+
7.50
c
≥
325
a
+
c
≥
36