1.
Simplify (7
a
4
b
) (8
a
7
b
6
).
A.
56
a
28
b
6
B.
56
a
11
b
7
C.
15
a
28
b
6
D.
15
a
11
b
7
Hint
2.
Simplify
Assume the denominator is not equal to zero.
A.
B.
C.
D.
Hint
3.
Find
.
A.
14
B.
-14
C.
15
D.
-15
Hint
4.
Solve the equation
x
2
= 0.81.
A.
x
= 0.9 or
x
= -0.9
B.
none of these is correct
C.
x
= 0.9 only
D.
x
= -0.9 only
Hint
5.
Which equation represents exponential growth?
A.
y
= 3.96(0.65)
x
B.
y
= 2.03(5)
x
C.
y
= 6.38(1)
x
D.
y
= 9(0.5)
x
Hint
6.
Which expression increases most quickly?
A.
2
x
B.
x
+ 2
C.
2
x
D.
x
2
Hint