1.
Choose the relation that is a function.
A.
B.
C.
D.
Hint
2.
Which graph represents a function?
A.
B.
C.
D.
Hint
3.
If
f
(
x
) = 2
x
- 2, find 2[
f
(3)].
A.
10
B.
4
C.
8
D.
2
Hint
4.
Find
f
(
x
– 7) if
f
(
x
) = -4
x
– 10.
A.
-4
x
– 17
B.
4
x
+ 3
C.
4
x
– 38
D.
-4
x
+ 18
Hint
5.
Find
h
(-2.5) if
h
(
z
) =
z
² + 3.5
z
– 2.75.
A.
0.25
B.
-5.25
C.
12.25
D.
-17.75
Hint