1.
Which is the graph of
y
= 2.5
x
?
A.
B.
C.
D.
Hint
2.
What is the
y
-intercept of the graph of
y
= 4
x
- 2
?
A.
0
B.
-2
C.
-1
D.
Hint
3.
Use a graph in order to approximate
.
A.
0.0089
B.
112.6
C.
133.4
D.
0.0045
Hint
4.
A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation
y
= 30(0.92)
d
, where
y
is the number of phone calls after
d
days. How many phone calls should she expect after a week?
A.
23
B.
28
C.
17
D.
2
Hint
5.
Use a graph to approximate 3
1.2
.
A.
3.7
B.
0.27
C.
3.12
D.
5.4
Hint