Solve and choose the answer to test your knowledge.
Multiple Choice: Select the correct answer on the list.
1. If 10x + 2 = 7, what
is the value of 2x?
o
-0.5
o
0.5
o
1
o
5
o
10
2. A long distance runner does a first lap around
a track in exactly 50 seconds. As she tires, each subsequent lap takes 20%
longer than the previous one. How long does she take to run 3 laps?
o
182
seconds
o
160
seconds
o
180
seconds
o
72
seconds
o
150
seconds
3. A number N is multiplied by 3. The result is
the same as when N is divided by 3. What is the value of N?
o
-1
o
0
o
3
o
1
o
-3
4. Which of the following equations satisfies the
five sets of numbers shown in the above table?
o
y = 2x
o
y = x3 + 4
o
y = 2x2 = 7
o
y = 3x + 1
o
y = 6x
5. John buys 100 shares of stock at $100 per
share. The price goes up by 10% and he sells 50 shares. Then, prices drop by
10% and he sells his remaining 50 shares. How much did he get for the last 50?
o
$5050
o
$4900
o
$5000
o
$5500
o
$4950
6. The sides of a triangle are equal to integral
numbers of units. Two sides are 4 and 6 units long, respectively; what is the
minimum value for the triangle's perimeter?
o
11
units
o
13
units
o
10
units
o
9
units
o
12
units
7.
Herbert plans to use the earnings from his lemonade stand according to the table above, for the first month of operations. If he buys $70 worth of lemons, how much profit does he take home?
o
$15
o
$30
o
$20
o
$35.50
o
$40
8. A teacher has 3 hours to grade all the papers
submitted by the 35 students in her class. She gets through the first 5 papers
in 30 minutes. How much faster does she have to work to grade the remaining
papers in the allotted time?
o
20%
o
10%
o
15%
o
25%
o
30%
9.
A sailor judges the distance to a lighthouse by holding a ruler
at arm's length and measuring the apparent height of the lighthouse. He knows
that the lighthouse is actually 60 feet tall. If it appears to be 3 inches tall
when the ruler is held 2 feet from his eye, how far away is it?
o
240
feet
o
60
feet
o
120
feet
o
480
feet
o
960
feet
10. If x2 - 4 = 45, then x could be equal to
o
9
o
-7
o
5
o
-4
o
3
11. Determine the volume
of a rectangular box with a length of 5 inches, a height of 7 inches, and a
width of 9 inches.
o
315
in.3
o
445.095
in.3
o
45
in.3
o
35
in.3
o
21
in.3
12.What is the greatest integer value of y for which 5y - 20 < 0?
o
5
o
1
o
4
o
2
o
3
13.Which equation is represented by the graph
shown below?
o
y = -5/3x - 2
o
y = 5/3x + 2
o
y = -5/3x + 2
o
y = 5/3x - 2
o
y = 5x + 2
14.The right circular cylinder shown in the
figure above has a height of 10 units and a radius of 1 unit. Points O and P
are the centers of the top and bottom surfaces, respectively. A slice is cut
from the cylinder as shown, so that the angle at the top, O, is 60 degrees, and
the angle at the bottom, P, is 60 degrees. What is the volume of the slice?
o
31.4
units
o
10.47
units
o
7.85
units
o
5.23
units
o
15.7
units
15.For the number set {7, 12, 5, 16, 23, 44, 18,
9, Z}, which of the following values could be equal to Z if Z is the median
of the set?
o
14
o
12
o
17
o
11
o
21
Answers: Sorry if my answers are very detailed or elementary. I want the others to fully understand the concept and how to get the correct answers.
