1.
The revenue for the sale of
x
objects is
r
(
x
) = 8
x
. The cost of manufacturing
x
objects is
c
(
x
) = 0.5
x
+ 300. Write the profit function.
A.
8.5
x
- 300
B.
8.5
x
+ 300
C.
7.5
x
- 300
D.
7.5
x
+ 300
Hint
2.
State the domain of
(
x
) for
f
(
x
) =
and
g
(
x
) =
A.
B.
C.
D.
Hint
3.
Given
f(x)
=
x
-5 and
g(x)
=
x
2
+ 3,find (
f · g
)(
x
).
A.
4
x
3
–2
x
B.
x
2
–2
x
-15
C.
x
3
–5
x
2
+3
x
-15
D.
x
3
+5
x
2
+3
x
-15
Hint
4.
Find the domain of
f
(
g
(
x
)) given
f
(
x
) =
, and
g(x)
=
x
-1
A.
x
0, 1, -1
B.
all real numbers
C.
x
1
D.
x
1,-1
Hint
5.
Find the first three iterates of the function
g(x)
=
x
2
+
x
for an initial value of
x
0
= 1.
A.
= 2
= 6
= 12
B.
= 2
= 6
= 36
C.
= 0
= 2
= 4
D.
= 2
= 6
= 42
Hint