1.
Which is the graph of
y
= 2.5
x
?
A.
B.
C.
D.
Hint
2.
Use a graph in order to approximate
.
A.
112.6
B.
0.0045
C.
133.4
D.
0.0089
Hint
3.
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.
28
B.
17
C.
2
D.
23
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
= 20(0.53)
d
, where
y
is the number of phone calls after
d
days. On what day should she expect to have 3 calls?
A.
3
B.
2
C.
10
D.
15
Hint
5.
Use a graph to approximate 3
1.2
.
A.
0.27
B.
5.4
C.
3.7
D.
3.12
Hint