1.
What is the difference between the highest and the lowest values?
A.
80
B.
75
C.
84
D.
100
Hint
2.
Which of the following sentences is true?
A.
when
x
= 4.
B.
when
x
= 5.
C.
when
x
= 6.
D.
3
x
+ 5 <
x
2
when
x
= 4.
Hint
3.
Name the coefficient of
xy
2
.
A.
1
B.
y
C.
0
D.
x
Hint
4.
Find the median of {55, 21, 47.4, 69, 71}.
A.
55
B.
71
C.
21
D.
47.4
Hint
5.
Solve the proportion
for the value of
z
to the nearest hundredth.
A.
1.34
B.
0.39
C.
2.56
D.
2.10
Hint
6.
Simplify (3
a
4
b
5
c
)
4
.
A.
3
a
16
b
20
c
4
B.
12
a
8
b
9
c
5
C.
7
a
16
b
20
c
4
D.
81
a
16
b
20
c
4
Hint
7.
Write an algebraic expression for the verbal expression. the sum of 4 and one half of the number
x
A.
4 +
÷
x
B.
4 -
x
C.
4 +
x
D.
4 -
÷
x
Hint
8.
Find the solution of 2(
x
– 5) = 30
if the replacement set is {19, 20, 21, 22}.
A.
20
B.
19
C.
22
D.
21
Hint
9.
Simplify 2
x
+ 5
x
+ 4(
x
+ 3).
A.
23
x
B.
11
x
+ 12
C.
14
x
D.
11
x
+ 3
Hint
10.
Solve
A.
B.
C.
y
= -27
D.
y
= 27
Hint
11.
Which scatter plot shows that
x
and
y
have a positive correlation?
A.
B.
C.
D.
Hint
12.
What are the dimensions of the matrix
?
A.
6
B.
4 × 2
C.
3 × 2
D.
2 × 3
Hint
13.
Find
A
+
C
.
A.
B.
C.
impossible
D.
Hint
14.
Find the range of the data.
A.
42.5
B.
61
C.
23
D.
19.5
Hint
15.
Everyone at the stadium is eligible for a drawing at the end of the night. If everyone was given a number, and 10 winners are announced, what kind of sampling is represented?
A.
Systematic Sampling
B.
Cluster Sampling
C.
Convenience Sampling
D.
Random Sampling
Hint
16.
What kind of sampling is represented if dentists from random areas of the city are asked about their favorite toothpaste?
A.
Convenience Sampling
B.
Cluster Sampling
C.
Random Sampling
D.
Systematic Sampling
Hint
17.
Find the mean of the data in the stem-and-leaf plot.
A.
67
B.
78
C.
77
D.
99
Hint
18.
What is
B
–
C
?
A.
B.
C.
D.
Hint
19.
Translate the phrase
the sum of negative four times a number and eighteen
into a variable expression.
A.
-14(
y
+ 18)
B.
-4(
y
+ 18)
C.
-4 + 18
y
D.
-4
y
+ 18
Hint
20.
Solve
x
2
= 400.
A.
200
B.
20
C.
20
D.
200
Hint