1.
Express 45,280,000 in scientific notation.
A.
4.528 × 10
7
B.
4.528 × 10
6
C.
4.528 × 10
-7
D.
45.28 × 10
6
Hint
2.
Simplify (-3
a
5
b
3
)
4
.
A.
-81
a
9
b
12
B.
81
a
20
b
12
C.
-12
a
20
b
12
D.
-12
a
9
b
7
Hint
3.
Factor 8
a
4
b
- 3
a
b
2
c
.
A.
a
2
b
(8
a
2
- 3
b
c
)
B.
a
b
(8
a
3
- 3
b
c
)
C.
8
a
b
(
a
2
- 3
b
c
)
D.
a
b
c
(8
a
3
- 3
b
)
Hint
4.
Find
A.
9
y
B.
81
y
C.
9|
y
3
|
D.
9
y
2
Hint
5.
Simplify
A.
B.
C.
D.
Hint
6.
Solve
A.
B.
5
C.
D.
Hint
7.
Simplify -8
i
· 6
i
.
A.
B.
48
-1
C.
48
D.
-48
Hint
8.
Simplify
i
17
.
A.
-1
B.
-
i
C.
1
D.
i
Hint
9.
Determine whether the expression 5
x
3
y
3
–
x
2
y
2
is a polynomial.
A.
No, because there are two variables.
B.
Cannot be determined from given information.
C.
No, because there are two terms.
D.
Yes.
Hint
10.
Determine whether the expression
x
+
y
+
z
is a monomial, binomial, or trinomial.
A.
monomial
B.
Cannot be determined from given information.
C.
binomial
D.
trinomial
Hint
11.
A.
4
B.
1
C.
–5
D.
5
Hint
12.
Simplify
A.
B.
C.
y
+ 7
D.
Hint
13.
Factor 4
x
2
– 49.
A.
B.
C.
D.
(2
x
+ 7)(2
x
– 7)
Hint
14.
A.
B.
C.
D.
Hint
15.
Simplify
A.
B.
C.
D.
Hint
16.
Simplify
A.
B.
2
C.
D.
Hint
17.
Evaluate
A.
9
B.
486
C.
81
D.
27
Hint
18.
Solve
A.
36
B.
no real solution.
C.
18
D.
Hint