1.
Evaluate
. Express the result in scientific notation.
A.
80 × 10
-8
B.
0.8 × 10
-8
C.
8.0 × 10
-9
D.
8.0 × 10
-7
Hint
2.
Find
.
A.
15
B.
-14
C.
-15
D.
14
Hint
3.
Solve the equation
x
2
= 0.81.
A.
x
= 0.9 only
B.
x
= -0.9 only
C.
x
= 0.9 or
x
= -0.9
D.
none of these is correct
Hint
4.
Use an exponent to write 177,147 as a power of 3.
A.
3
11
B.
3
9
C.
3
19
D.
3
17
Hint
5.
Use the following table to find the population of bacteria in hour
n
.
A.
180,000
n
B.
30,000
6
n
C.
30,000 × 6
6
D.
6 × 30,000
n
Hint
6.
Identify the decay factor in the equation
p
= 1,508,069 × 0.89
n
where
p
is the bacteria population and
n
is the number of days after a vaccine was administered.
A.
n
B.
p
C.
1,508,069
D.
0.89
Hint