1.
Approximate 5(3
1.8
) to the nearest hundredth.
A.
27.42
B.
32.90
C.
29.16
D.
36.12
Hint
2.
Which is the graph of
y
= 2.5
x
?
A.
B.
C.
D.
Hint
3.
What is the
y
-intercept of the graph of
y
= 4
x
- 2
?
A.
B.
0
C.
-2
D.
-1
Hint
4.
For equations of the form
y
=
a
x
, where
a
is a constant, what is true about
a
if the
y
-values change little for small values of
x
, but increase quickly for large
x
values?
A.
–1 <
a
< 0
B.
0 <
a
< 1
C.
a
= 1
D.
a
> 1
Hint
5.
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.
10
B.
15
C.
2
D.
3
Hint