What equation is used to show that data is proportional?
What is y=kx
100
A triangle is dilated using a scale factor of 3/8 to create a similar triangle. If the perimeter of the original triangle is 56 inches, what is the perimeter of the new triangle, in inches?
Record your answer on the grid below. Be sure to use the correct place value
What is 21 inches
100
If a squares dimensions are doubled, How would the new perimeter be affected?
What is - The new perimeter will be 4 times as large as the orginal. (SF)^2 = (2)^2
100
The cost of a dozen and a half donuts is $2.39. Which expression can be used to determine the cost of
one donut?
F. 2.39/12
G. 2.39/18
H. 18/2.39
J. 2.39/12 - 6
What is G. 2.39/18...becuase it is 12+ 6 donuts = 18 donuts in all. This is a unit rate question. Make a ratio/rate of price per donut. (2.39/18 donuts= x/1 donut)
100
A triangular prisim has a Base Area of 12 square inches, what formula would you use to get this Base Area ?
What is 1/2bh or bh/2
200
Mr. Nelson sold 147 bags of popcorn and 216 bottles of water in 3 days. At this rate, how many more bottles of water than bags of popcorn will Mr. Nelson sell in 5 days?
F. 84
G. 69
H. 115
J. Not here
What is H. 115
200
A square has its dimensions changed proportionally by a scale factor of 3. If the new area is 225 square
inches, what was the area of the original square?
What is 25.....because (SF)^2 = (1/3)^2= 1/9 so 1/9(225)=25
200
A square has its dimensions changed proportionally by a scale factor of 4. If the new perimeter is 128
inches, How could I find the original perimeter.
What is 1/4 of 128.... because 4 = (4/1), the opposite of (4/1) is (1/4).... so (SF)^1 = (1/4)^1
200
In the testing of a new kind of cooling system, the thermostat recorded that the temperature of the cooled
space changed -2.5 degrees Celcius each minute for 15 consecutive minutes. How much did the temperature of the
cooled space change in all?
What is -37.5 degrees ....because -2.5(15)
200
A Rectangular pool has dimensions of 132 inches by 123 inches. How many cubic inches of water would the pool hold if the height of the pool is 96 inches high? Round to the nearest tenth)
What is 1558.7 cubic inches
300
What is the constant of proportionality in the equation, 12=1/2(9)
What is 1/2 , y=kx or y=mx ....k = 1/2
300
A rectangle has a width of 9 inches and a length of 15 inches. If the rectangle is enlarged by a scale factor of 3/2, what is the perimeter of the dilated rectangle?
A. 68 inches
B. 72 inches
C. 60 inches
D. 64 inches
What is B. 72
300
What are the effects of the volume of a Rectagular prism whose dimensions are 1/3 of the original dimensions.
What is 1/27 of the original volume....because (SF)^3 =(1/3)^3= (1/3)(1/3(1/3)= 1/27
300
Marty is watching the homecoming parade. Floats are passing her at a rate of 3 floats every minute. If it
takes 9 minutes for all the floats to pass him, which equation can be used to find f, the number of floats
that are in the parade?
A. F= 9/3
B. F=9/3(60)
C. 9(3)
D. (9*30) / 60
What is A. F=9/3 ....because the equation would be 9 minutes = 3 min * x floats.
300
Draw a net and solve the problem.(group must show in board)
Fred designs a candy box in the shape of a triangular prism. The base of each equailateral triangle face measures 4 inches, while the height of the face is 7 inches. Given that the length of the prism is 11 inches, what is the Surface Area of the candy box?
What is 160 square inches
400
Seth uses a school camera to take pictures for the yearbook and for the school paper. Last month he took 270 pictures for the yearbook and 180 pictures for the school paper with this camera. Using a proportion, determine p, the percentage of the total number of pictures he took that were for the yearbook?
What is 270 out of 450 = p out of 100 %
Answer: 60%
400
A pentagon with side lengths of 9 cm, 18 cm, 24 cm, 18 cm, and 9 cm is dilated by a scale factor of 1/3. Which of the following represents the dimensions of the dilated pentagon?
What is 6 cm, 3 cm, 12 cm, 6 cm, 3 cm
400
What would be the affect on the area of a trapezoid whose base is changed by a scale factor of 1/3?
What is 1/3 of the original Area....because only one dimension is changed . (SF)^1 = (1/3)^1
400
Mrs. Ellen’s cell phone bill was $74 for a total usage of 520 minutes. Write and equation to help solve for c,the average cost per minute for her cell phone?
What is $74= 520(c)
400
Draw the net and solve the problem.(group must go to the board)
A pyramid has a base of 3ft and height of 2ft. The pyramid is 10 ft tall, what is the Lateral Surface Area of this 3-d figure?
What is 50 sq feet. because (3*10)/2=15 and (2*10)/2=10 so 2(15) + 2(10) = 50
500
John is having a new deck built. He paid $485 for the required materials, and he will pay his brother $25 an hour to build the deck. What equation shows the relationship between h, the number of hours John’s brother works, and c, the total cost of the project?
What is 485 + 25h= c
500
A cylinder has a height of 9 inches and a radius of 4 inches. What would be the new Volume if the scale factor is 0.3...Round to the nearest hundreths if necessary AND include the unit of measurement.
What is 12.21 cubic inches
500
A cylinder has a height of 9 inches and a radius of 4 inches. If the height remains the same, but the radius increases by a factor of 8 , what is the effect on the volume of the larger cylinder?
What is 64 time larger than the original cylinder...because (SF)^2=(8)^2= (8)(8)= 64
500
Write and Solve an equation to solve for the missing angle. ( group must show proper work on the board)
A triangle has angles of 73 degrees and 15 degrees, what is the missing angle?
What is 73 degrees + 15 degrees+ x degrees = 180 degrees; x = 92 degrees
500
The Volume of a Cube is 125 cubic feet, what is the base of the cube?