1.
Solve the equation
a
= (-5) + 13.
A.
8
B.
18
C.
-18
D.
-8
Hint
2.
Which number is
not
a factor of 315?
A.
5
B.
2
C.
9
D.
3
Hint
3.
A number is divisible by 6 if ______.
A.
the sum of the digits is divisible by 6
B.
the ones digit is divisible by 2, and the tens digit is divisible by 3
C.
the last two digits are divisible by 2 and 3
D.
the number is divisible by 2 and 3
Hint
4.
Write the expression 4 · 4 · 4 · 4 · 4 using exponents.
A.
5
5
B.
4
4
C.
5
4
D.
4
5
Hint
5.
Factor 144 completely.
A.
2 · 2 · 2 · 2 · 3 · 3
B.
4 · 4 · 9
C.
12 · 12
D.
3 · 3 · 4 · 4
Hint
6.
Write the ratio 24 to 96 in simplest form.
A.
B.
C.
D.
Hint
7.
Find 3
2
· 3
4
.
A.
3
9
B.
3
8
C.
3
2
D.
3
6
Hint
8.
Find the quotient
A.
8
-3
B.
8
3
C.
8
18
D.
8
9
Hint
9.
Write 3,458,000 in scientific notation.
A.
0.3458 × 10
6
B.
3.458 × 10
3
C.
3.458 × 10
6
D.
3458 × 10
3
Hint
10.
Write 3 ·
x
·
x
·
x
·
x
·
y
·
y
·
y
·
y
using exponents.
A.
3
xy
8
B.
3
x
4
y
4
C.
3>
x
4
y
3
D.
3
4
x
4
y
4
Hint
11.
Factor 15
x
3
- 5
x
2
.
A.
5
x
(3
x
2
- x)
B.
5
x
2
(3
x
– 1)
C.
x
(15
x
2
- 5
x
)
D.
x
2
(15
x
– 5)
Hint
12.
The area of a rectangle can be written by the expression 24
x
4
+ 18
x
3
. Find a set of possible dimensions for this rectangle.
A.
3 by 8
x
3
+ 6
x
3
B.
2
x
4
by 12 + 9
x
C.
6
x
3
by 4
x
+ 3
D.
24
x
3
by
x
+ 18
Hint
13.
Simplify
A.
B.
Already simplified
C.
D.
Hint
14.
Evaluate
x
-4
if
x
= 3.
A.
-81
B.
81
C.
D.
Hint
15.
Evaluate
y
-5
if
y
= -2.
A.
32
B.
C.
D.
-32
Hint
16.
Express 1,000,000 in scientific notation.
A.
1 × 10
6
B.
1 × 10
5
C.
1 × 10
-6
D.
1 × 10
7
Hint