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CTJan27 Online Year 8 Mathematics 05062024

 1. 

If Point T is divided by mc001-1.jpg, will the quotient be greater than T, between T and 0, between 0 and –T, or less than –T?
mc001-2.jpg
a.
between T and 0
c.
greater than T
b.
less than –T
d.
between 0 and –T
 

 2. 

The subtotal of a customer’s order was $36.74 after using a coupon good for 15% off. Which of the following operations could be used to calculate the total price before the discount was applied?
a.
divide the subtotal by 0.15
c.
divide the subtotal by 0.85
b.
multiply the subtotal by 0.15
d.
multiply the subtotal by 0.85
 
 
Find the value of each expression. Round decimals to the nearest hundredth if necessary.
 

 3. 

mc003-1.jpg
a.
mc003-4.jpg
c.
mc003-6.jpg
b.
mc003-5.jpg
d.
mc003-7.jpg
 

 4. 

Of the choices provided, which number is located between Points C and D on the number line pictured below?
mc004-1.jpg
a.
–5
c.
5
b.
–3
d.
2
 

 5. 

What is one possible answer when the number 1 is divided by a positive number larger than 1?
a.
1
c.
12
b.
0
d.
0.1
 

 6. 

Which of the following should be done first in the expression below?
mc006-1.jpg
a.
13 ´ 9
c.
14 ¸ 9
b.
13 ´ 2
d.
2 - 14
 

 7. 

Newton’s second law of motion can be modeled by the equation mc007-1.jpg where F is the force applied to an object, m is the mass of the object, and a is the resulting acceleration. For example, a force of 350 Newtons is required to accelerate a 3.5-kilogram object at 100 meters per second2. If the same amount of force is applied to an object that has a mass of 1.75 kilograms, what will the resulting acceleration be?
a.
800 meters per second2
c.
100 meters per second2
b.
400 meters per second2
d.
200 meters per second2
 

 8. 

Ralph mixes paint for his art projects in a can with the dimensions shown below. If he wants to be able to mix 70% more paint in the can, which of the following changes in dimensions will accomplish this?
mc008-1.jpg
a.
Multiply the height of the can by 0.7.
b.
Multiply the radius of the can by 0.7.
c.
Multiply the diameter of the can by 1.7.
d.
Multiply the height of the can by 1.7.
 

 9. 

Fitness experts rely on a calculation called the Basal Metabolic Index (BMI) to determine whether a person is overweight. The BMI is calculated using a formula, which for a person 60 inches tall is given by mc009-1.jpg, where w is the person’s weight in pounds and B is the BMI. Which of the following equations is equivalent to mc009-2.jpg?
a.
mc009-3.jpg
c.
mc009-5.jpg
b.
mc009-4.jpg
d.
mc009-6.jpg
 

 10. 

The performance review scores for several employees in a work group are shown in the table. Which of the following measures would make the average score appear as high as possible?
Employee
I.D. Number
Performance
Review
Score
101
86
102
90
103
87
104
77
105
78
106
72
107
84
108
87
a.
mean
c.
mode
b.
median
d.
range
 

 11. 

According to the graph above, which of the following could be the number of students surveyed?
a.
??
c.
??
b.
??
d.
??
 

 12. 

The scatterplot shows the average resale value of a particular car model after different lengths of time. Use the line of best fit to predict the resale value of the car after 10 years.
Car Depreciation
mc012-1.jpgmc012-2.jpg
a.
$7.80
c.
$5,800
b.
$15,000
d.
$7,800
 

 13. 

Lucy surveyed people at an amusement park and asked them to name their favorite roller coaster. The results are shown in the bar graph below. Which of the following statements best describes why the graph might be considered misleading?
Favorite Roller Coaster Ride
mc013-1.jpgmc013-2.jpg
a.
There is a break in the vertical axis of the graph.
b.
The title of the graph is misleading.
c.
There is no scale on the vertical axis.
d.
There are no labels on the horizontal axis.
 

 14. 

What will the coordinates of Triangle RST be after it is translated 4 units down and 3 units left?
mc014-1.jpg
a.
R(–1, –2), S(8, –1), T(5, –9)
c.
R(–1, 6), S(8, 7), T(5, –1)
b.
R(–7, –2), S(8, –1), T(–1, –1)
d.
R(–7, –2), S(2, –1), T(–1, –9)
 

 15. 

A bicycle rental company charges customers a deposit of $3.00 plus an hourly rate as shown in the graph. What is the slope of the line joining these points, and what does the slope represent?
Bicycle Rental Rates
mc015-1.jpgmc015-2.jpg
a.
The slope is 1.5. This means that a customer used the bicycle for 1.5 hours.
b.
The slope is 3. This represents the deposit of $3.00.
c.
The slope is 1.5. This represents the rental charge of $1.50 per hour.
d.
The slope is 3. This represents the rental charge of $3.00 per hour.
 
 
Rectangle ABCD is shown below in the figure, with diagonals nar002-1.jpg and nar002-2.jpg intersecting at Point E.
nar002-3.jpg
 

 16. 

Refer to the rectangle above. What basic fact about rectangles allows you to say that mc016-1.jpg?
a.
A rectangle is a type of parallelogram.
b.
All quadrilaterals have congruent sides.
c.
The diagonals of a rectangle bisect each other.
d.
Opposite sides of a rectangle are congruent.
 
 
Rhombus ABCD is shown below, with diagonals nar003-1.jpg and nar003-2.jpg intersecting at Point E.
nar003-3.jpg
 

 17. 

Refer to rhombus ABCD above. Which set of triangles is congruent?
a.
mc017-4.jpgs CDA and DAB
c.
mc017-6.jpgs CDA and CDE
b.
mc017-5.jpgs CDA and CDB
d.
mc017-7.jpgs CDA and CAB
 

 18. 

In the figure below, a square is inscribed inside of a circle creating four equally sized regions. Which of the following expressions could be used to determine the area of the shaded region?
mc018-1.jpg
a.
mc018-4.jpg square feet
c.
mc018-6.jpg square feet
b.
mc018-5.jpg square feet
d.
mc018-7.jpg square feet
 

 19. 

The cylindrical beaker below holds 1 liters of liquid. Given that 1 cubic centimeter is equivalent to 1 milliliter, find the height of the beaker. Use 3.14 for pi and round your answer to the nearest tenth.
mc019-1.jpg
a.
8.8 centimeters
c.
6.5 centimeters
b.
53.1 centimeters
d.
12.1 centimeters
 

 20. 

Barb used 2.5 small jars of model paint to cover the surface of a sphere for a science project. Each jar of paint covers about 120 square inches of area. What is the radius of the sphere to the nearest tenth of an inch? Use 3.14 for pi.
a.
7.6 inches
c.
9.8 inches
b.
6.8 inches
d.
4.9 inches
 

 21. 

A sketch of the city pond in Centerville is shown below.
mc021-1.jpg
A small island was made in the middle of the pond. The city must now fill the pond with fish. Using the dimensions on the sketch, which of the following expressions could be used to determine the area of the water to be stocked with fish?
a.
mc021-5.jpg
c.
mc021-7.jpg
b.
mc021-6.jpg
d.
mc021-8.jpg
 

 22. 

A local computer store sells computers for $299. The store makes a profit of $60 for each computer sold. If the store made a monthly profit of $1,440, how much money did it take in during the month?
a.
$27,384
c.
$7,176
b.
$17,280
d.
24
 

 23. 

When Julio first brought his new puppy home, the puppy weighed 2 pounds 12 ounces. After several weeks the puppy had grown to 3 pounds 7 ounces. What was the percent of increase in the weight of the puppy during this time period? Round your answer to the nearest tenth, if necessary. (Hint: Remember 1 pound is equivalent to 16 ounces.)
a.
80%
c.
50%
b.
20%
d.
25%
 

 24. 

Order the set of rational numbers from least to greatest.
mc024-1.jpg, mc024-2.jpg, mc024-3.jpg, mc024-4.jpg
a.
mc024-13.jpg, mc024-14.jpg, mc024-15.jpg, mc024-16.jpg
c.
mc024-21.jpg, mc024-22.jpg, mc024-23.jpg, mc024-24.jpg
b.
mc024-17.jpg, mc024-18.jpg, mc024-19.jpg, mc024-20.jpg
d.
mc024-25.jpg, mc024-26.jpg, mc024-27.jpg, mc024-28.jpg
 

 25. 

A safety engineer calculates the minimum length of a guy wire supporting a radio antenna to be mc025-1.jpg meters long. Between what two consecutive integers does mc025-2.jpg lie on a number line?
a.
21 and 22
c.
25 and 26
b.
22 and 23
d.
23 and 24
 
 
The table shows the mass (in kilograms) of several planets.
Mass of Planets
Planet
Mass
(kilograms)
Mercury
nar004-1.jpg
Saturn
nar004-2.jpg
Neptune
nar004-3.jpg
Jupiter
nar004-4.jpg
Source: http://www.noblemind.com
 

 26. 

Which of the four planets listed in the table above has the largest mass?
a.
Neptune
c.
Jupiter
b.
Earth
d.
Venus
 

 27. 

Express 0.00000762 using scientific notation.
a.
mc027-2.jpg
c.
mc027-4.jpg
b.
mc027-3.jpg
d.
mc027-5.jpg
 

 28. 

Y, R, N, and G represent four points on the number line. Which point will have the smallest value when it is divided by mc028-1.jpg?
mc028-2.jpg
a.
Point Y
c.
Point G
b.
Point R
d.
Point N
 

 29. 

Use mental math to find the product.
mc029-1.jpg
a.
–53
c.
106
b.
–531
d.
266
 

 30. 

A landscaper wants to plant rose bushes around the circumference of a circular fountain in a park. The radius of the fountain is 8 feet. The landscaper will plant the bushes 2 feet from the fountain with 2 feet between each bush along the circumference. Use 3 as an approximation for pi to estimate how many rose bushes will be needed.
mc030-1.jpg
a.
about 15 rose bushes
c.
about 60 rose bushes
b.
about 30 rose bushes
d.
about 42 rose bushes
 

 31. 

What is a number that would appear between 1.3 and mc031-1.jpg on the number line?
a.
1.8
c.
0
b.
3.5
d.
–0.9
 

 32. 

A bicycle store is offering to sell an assembled bike at a special price. They plan to charge $90 per bike and have to pay their worker $11 per hour to do the assembly. The store determines its profit by the following formula:
mc032-1.jpg
P is the profit, a is the number of bikes assembled, and t is the hours spent making one bike.

What equation shows the amount of profit earned if the worker makes 3 bikes?
a.
mc032-4.jpg
c.
mc032-6.jpg
b.
mc032-5.jpg
d.
mc032-7.jpg
 

 33. 

Simplify the following expression.
mc033-1.jpg
a.
mc033-2.jpg
c.
mc033-4.jpg
b.
mc033-3.jpg
d.
mc033-5.jpg
 

 34. 

Scientists convert between temperatures in Fahrenheit and Celsius by using the formula mc034-1.jpg, where C is the temperature in degrees Celsius and F is the temperature in degrees Fahrenheit. If the temperature in Celsius is –15°, what is the temperature in degrees Fahrenheit?
a.
–40°F
c.
–26°F
b.
31°F
d.
5°F
 
 
Students in a class were asked how many pets they had at home. Their answers are given below.
0, 0, 0, 0, 2, 2, 2, 2, 3, 3, 4, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8
 

 35. 

Refer to the data above. What is the range of answers in the pet survey?
a.
25
c.
4.6
b.
8
d.
7
 
 
The information in the table was compiled from a survey of state park users’ participation in various outdoor activities.
Participation of State Park Users (thousands)
Age
Hiking
Camping
Picnicking
Boating
Total
18–29
6.6
10.2
6.3
6.4
29.5
30–45
9.4
8.7
5.6
7.7
31.4
46–60
4.8
3.4
11.5
6.3
26.0
60+
5.5
3.7
11.9
5.3
26.4
Total
26.3
26.0
35.3
25.7
113.3
 

 36. 

Refer to the above Participation of State Park Users table. Which age group had the highest percentage of its members participating in hiking?
a.
46-60
c.
18-29
b.
60+
d.
30-45
 

 37. 

The line graph shows the projected sales figures of a company over the next 4 years. Which of the following statements best describes why the graph might be considered misleading?
Projected Sales Figures
mc037-1.jpg
a.
The title of the graph is misleading.
b.
There is a break in the horizontal axis of the graph.
c.
The scale of the horizontal axis is too great.
d.
There is no scale on the vertical axis.
 

 38. 

The table shows the number of absent students each week at Mariemont High School during the first eight weeks of the school year. Which of the following measures would make the number of absent students per week appear as small as possible?
11
10
6
17
13
8
7
8
a.
range
c.
mode
b.
mean
d.
median
 

 39. 

Use triangle similarity to find the length of BD.
mc039-1.jpg
a.
18
c.
15
b.
14
d.
16
 

 40. 

In the manufacturing of a car part, the solid below is cut in half by a knife passing from its top directly through to its bottom, in the same orientation as it appears.
mc040-1.jpg
What is the most accurate representation of the resulting cross section?
a.
mc040-2.jpg
c.
mc040-4.jpg
b.
mc040-3.jpg
d.
mc040-5.jpg
 

 41. 

Point mc041-1.jpg in the graph below is reflected through the line mc041-2.jpg and then through the line mc041-3.jpg.
mc041-4.jpg
What are the coordinates of Point mc041-5.jpg, the image of Point mc041-6.jpg?
a.
mc041-9.jpg
c.
mc041-11.jpg
b.
mc041-10.jpg
d.
mc041-12.jpg
 

 42. 

Triangle ABC, shown in the diagram below, is an isosceles triangle where mc042-1.jpg. What is the measure, in degrees, of mc042-2.jpg?
mc042-3.jpg
a.
123°
c.
43°
b.
57°
d.
84°
 

 43. 

What is the midpoint of mc043-1.jpg with endpoints M(–5, –8) and N(4, 9)?
mc043-2.jpg
a.
(mc043-6.jpgmc043-7.jpg)
c.
(mc043-10.jpgmc043-11.jpg)
b.
(mc043-8.jpgmc043-9.jpg)
d.
(mc043-12.jpgmc043-13.jpg)
 

 44. 

Tina is making a Valentine’s Day card for her mother on a 9-inch-by-8-inch sheet of construction paper. Along the perimeter of the card, she will glue a length of red ribbon. She will also glue quarter circles of the ribbon in each corner of the card as shown in the figure. The radius of each quarter circle is 1.8 inches. How much red ribbon will Tina need for the card? Round your answer to the nearest tenth of an inch.
mc044-1.jpg
a.
45.3 inches
c.
52.1 inches
b.
79.2 inches
d.
82.7 inches
 

 45. 

A group of students calculates the height of a tree to be mc045-1.jpg feet. Express this radical in simplest form.
a.
mc045-3.jpg
c.
25
b.
125
d.
mc045-4.jpg
 

 46. 

What is the value of the expression below?
mc046-1.jpg
a.
3
c.
10
b.
8
d.
15
 

 47. 

Luis bought a new calculator from an office supplies store. After tax, the total came to $50.88. If the sales tax rate is 6%, what was the price of the calculator before tax?
a.
$42.00
c.
$52.70
b.
$48.00
d.
$46.25
 

 48. 

In the first million decimal places of pi, there are 100,229 3’s. What percentage is closest to mc048-1.jpg, the fraction of digits that are 3’s?
a.
0.1%
c.
10.02%
b.
89.98%
d.
1%
 

 49. 

Lisa wants to evaluate the following expression:
mc049-1.jpg
What value is equivalent to the expression?
a.
20,736
c.
0.002
b.
0.012
d.
–0.002
 

 50. 

In 1987, there were approximately 5,000,000,000 people living on earth. In 1999, the population of earth was approximately 6,000,000,000 people. What was the approximate percent of increase in the population of earth from 1987 to 1999?
a.
20%
c.
70%
b.
120%
d.
10%
 

 51. 

The expression mc051-1.jpg is equivalent to
a.
mc051-2.jpg
c.
mc051-4.jpg
b.
mc051-3.jpg
d.
mc051-5.jpg
 

 52. 

For 10 days, Romero kept a record of the number of hours he spent listening to music.  The information is shown in the table below.

mc052-1.jpg

Which scatter plot shows Romero’s data graphically?
a.
mc052-2.jpg
c.
mc052-4.jpg
b.
mc052-3.jpg
d.
mc052-5.jpg
 

 53. 

Which expression represents mc053-1.jpg in simplest form?
a.
mc053-3.jpg
c.
mc053-5.jpg
b.
mc053-4.jpg
d.
mc053-6.jpg
 

 54. 

The expression mc054-1.jpg is equivalent to
a.
mc054-2.jpg
c.
mc054-4.jpg
b.
mc054-3.jpg
d.
mc054-5.jpg
 

 55. 

The equations mc055-1.jpg and mc055-2.jpg represent the money collected from school concert ticket sales during two class periods.  If x represents the cost for each adult ticket and y represents the cost for each student ticket, what is the cost for each adult ticket?
a.
$20
c.
$8
b.
$10
d.
$4
 

 56. 

The data set 5, 6, 7, 8, 9, 9, 9, 10, 12, 14, 17, 17, 18, 19, 19 represents the number of hours spent on the Internet in a week by students in a mathematics class.  Which box-and-whisker plot represents the data?
a.
mc056-1.jpg
c.
mc056-3.jpg
b.
mc056-2.jpg
d.
mc056-4.jpg
 

 57. 

Given:
mc057-1.jpg
What is the intersection of sets A and B?
a.
mc057-2.jpg
c.
mc057-4.jpg
b.
mc057-3.jpg
d.
mc057-5.jpg
 

 58. 

Tanya runs diagonally across a rectangular field that has a length of 40 yards and a width of 30 yards, as shown in the diagram below.

mc058-1.jpg

What is the length of the diagonal, in yards, that Tanya runs?
a.
50
c.
70
b.
60
d.
80
 

 59. 

What is an equation for the line that passes through the coordinates mc059-1.jpg and mc059-2.jpg?
a.
mc059-6.jpg
c.
mc059-8.jpg
b.
mc059-7.jpg
d.
mc059-9.jpg
 

 60. 

What is the slope of the line containing the points mc060-1.jpg and mc060-2.jpg?
a.
mc060-4.jpg
c.
mc060-5.jpg
b.
2
d.
mc060-6.jpg
 

 61. 

The expression mc061-1.jpg is equivalent to
a.
mc061-3.jpg
c.
mc061-5.jpg
b.
mc061-4.jpg
d.
mc061-6.jpg
 

 62. 

Which inequality is represented by the graph below?

mc062-1.jpg
a.
mc062-3.jpg
c.
mc062-5.jpg
b.
mc062-4.jpg
d.
mc062-6.jpg
 

 63. 

What is the quotient of mc063-1.jpg and mc063-2.jpg?
a.
mc063-3.jpg
c.
mc063-5.jpg
b.
mc063-4.jpg
d.
mc063-6.jpg
 

 64. 

What is the sum of  mc064-1.jpg and mc064-2.jpg expressed in simplest form?
a.
mc064-4.jpg
c.
mc064-6.jpg
b.
mc064-5.jpg
d.
mc064-7.jpg
 

 65. 

Julia went to the movies and bought one jumbo popcorn and two chocolate chip cookies for $5.00.  Marvin went to the same movie and bought one jumbo popcorn and four chocolate chip cookies for $6.00.  How much does one chocolate chip cookie cost?
a.
$0.50
c.
$1.00
b.
$0.75
d.
$2.00
 

 66. 

In a science fiction novel, the main character found a mysterious rock that decreased in size each day.  The table below shows the part of the rock that remained at noon on successive days.

mc066-1.jpg

Which fractional part of the rock will remain at noon on day 7?
a.
mc066-3.jpg
c.
mc066-5.jpg
b.
mc066-4.jpg
d.
mc066-6.jpg
 

 67. 

In the diagram below, what is the slope of the line passing through points A and B?

mc067-1.jpg
a.
mc067-5.jpg
c.
mc067-6.jpg
b.
2
d.
mc067-7.jpg
 

 68. 

Which equation shows a correct trigonometric ratio for angle A in the right triangle below?

mc068-1.jpg
a.
mc068-3.jpg
c.
mc068-5.jpg
b.
mc068-4.jpg
d.
mc068-6.jpg
 

 69. 

Debbie solved the linear equation mc069-1.jpg as follows:

mc069-2.jpg

She made an error between lines
a.
1 and 2
c.
3 and 4
b.
2 and 3
d.
4 and 5
 

 70. 

Which expression represents mc070-1.jpg in simplest form?
a.
mc070-3.jpg
c.
mc070-5.jpg
b.
mc070-4.jpg
d.
mc070-6.jpg
 

 71. 

Which ordered pair is a solution of the system of equations shown in the graph below?

mc071-1.jpg
a.
mc071-2.jpg
c.
mc071-4.jpg
b.
mc071-3.jpg
d.
mc071-5.jpg
 

 72. 

Which equation represents the line that passes through the points mc072-1.jpg and mc072-2.jpg?
a.
mc072-5.jpg
c.
mc072-7.jpg
b.
mc072-6.jpg
d.
mc072-8.jpg
 



 
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