1.
Simplify
A.
B.
C.
3
15
D.
15
Hint
2.
Simplify
A.
B.
y
30
C.
y
3
D.
Hint
3.
Find the value of
a
if the graph of the exponential function
y
=
a
·
2
x
passes through the point
A
(3, 128).
A.
16
B.
8
C.
4
D.
32
Hint
4.
Find the value of
a
if the graph of the exponential function
y
=
a
·
3
x
passes through the point
B
(2, -3).
A.
B.
3
C.
9
D.
-3
Hint
5.
Solve 5
2
n
+3
< 25.
A.
n
> 1
B.
n
< -1
C.
D.
Hint