1.
Write 2,564,000 in scientific notation.
A.
2.564×10
6
B.
2.564×10
5
C.
2,564×10
3
D.
25.64×10
5
Hint
2.
Find
a
7
·
a
4
A.
a
11
B.
a
3
C.
(2
a
)
11
D.
(2
a
)
3
Hint
3.
Find 5
y
7
× 8
y
2
.
A.
13
y
14
B.
40
y
9
C.
13
y
9
D.
40
y
14
Hint
4.
Rewrite
I
z
÷
j
z
using a single base.
A.
B.
C.
D.
(
i – j
)
z
Hint
5.
Simplify (
d
1
)
26
.
A.
d
26
B.
26
d
C.
d
27
D.
d
25
Hint
6.
Which expression increases most quickly?
A.
2
x
B.
x
+ 2
C.
2
x
D.
x
2
Hint
7.
What is the value of 5
x
when
x
= 5?
A.
10
B.
5
C.
25
D.
3125
Hint
8.
Use your calculator to evaluate the expression.6.23
19
A.
1.245 × 10
19
B.
12.45 × 10
19
C.
12.45 × 10
15
D.
1.245 × 10
15
Hint