1.
Approximate 5(3
1.8
) to the nearest hundredth.
A.
32.90
B.
36.12
C.
27.42
D.
29.16
Hint
2.
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.
0 <
a
< 1
B.
a
= 1
C.
a
> 1
D.
–1 <
a
< 0
Hint
3.
Use a graph in order to approximate
.
A.
112.6
B.
0.0089
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
= 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.
10
C.
2
D.
15
Hint
5.
Use a graph to approximate 3
1.2
.
A.
0.27
B.
3.7
C.
3.12
D.
5.4
Hint