1.
Write x
6
as a multiplication expression.
A.
x
·
x
·
x
·
x
· x ·
x
B.
C.
6
x
D.
6 · 6 · 6 · 6 · 6 · 6
Hint
2.
Evaluate the expression 4
n
+
m
2
if
m
= 6 and
n
= 8.
A.
44
B.
40
C.
88
D.
68
Hint
3.
Express 130,254 in expanded form.
A.
(1 × 10
5
) + (3 × 10
4
) + (2 × 10
3
) + (5 × 10
2
) + (4 × 10
1
)
B.
(1 × 10
5
) + (3 × 10
4
) + (2 × 10
2
) + (5 × 10
1
) + (4 × 10
0
)
C.
(1 × 10
5
) + (30 × 10
4
) + (2 × 10
2
) + (5 × 10
1
) + (4 × 10
0
)
D.
(1 × 10
6
) + (3 × 10
5
) + (2 × 10
3
) + (5 × 10
2
) + (4 × 10
1
)
Hint
4.
Find
y
for
y
=
x
2
- 15 if
x
= 6.
A.
51
B.
-3
C.
49
D.
21
Hint
5.
Evaluate 7(
a
–
b
)
3
if
a
= 3 and
b
= 1.
A.
28
B.
8
C.
56
D.
42
Hint