Test - Mock 8th STARR

Transcription

1 Test - Mock 8th STARR 1. The scatterplot shows the number of visitors to a beach each day and the high temperature in degrees Fahrenheit for that day. Based on this scatterplot, which statement appears to be true? A. There is a nonlinear correlation between the high temperature and the number of visitors to the beach. B. When the high temperature is above 100 F, fewer than 150 visitors are expected at the beach. C. There is no correlation between the high temperature and the number of visitors to the beach. D. When the high temperature is between 75 F and 90 F, more than 120 visitors are expected at the beach.

2 2. Which Venn diagram correctly describes the relationship between Set R and Set W? F. G. H. J.

3 3. Judy can decorate 3 cakes in 5 hours. Which graph has a slope that best represents the number of cakes per hour Judy can decorate? A. B. C. D.

4 4. The graph of a linear function is shown on the coordinate grid. What is the y-intercept of the graph of the linear function? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value. 5. Which situation can be represented by this equation? x = 650 8x A. Sierra has a bucket that originally contained 340 fl oz of water and is being filled at a rate of 5 fl oz per minute. Brian has a bucket that originally contained 650 fl oz of water and is being drained at a rate of 8 fl oz per minute. What is x, the number of minutes that need to pass in order for the two buckets to contain the same amount of water? B. Sierra started with savings of $340 and spends $8 of her savings every week. Brian started with savings of $650 and adds $5 to his savings every week. What is x, the number of weeks that need to pass in order for Sierra and Brian to have the same amount of savings? C. Sierra started with 340 cans of food for a food drive. She collects 5 more cans every day. Brian started with 650 cans of food for the food drive. He collects 8 more cans every day. What is x, the number of days that need to pass in order for Sierra and Brian to have the same number of cans of food? D. Sierra earns 345 points on each level of a video game. Brian earns 642 points on each level of the same video game. What is x, the number of levels that Sierra and Brian would have to play in order for them to have an equal number of points?

5 6. What value of x makes this equation true? F. 4 G. 14 H. 24 J The two lines graphed on the coordinate grid each represent an equation. Which ordered pair represents a solution to both equations? A. ( 4,0) B. ( 2,1) C. (0, -4) D. (0, -2)

6 8. Figure I and Figure II are similar pentagons. Which proportion must be true? F. G. H. J.

7 9. Quadrilateral ABCD was dilated with the origin as the center of dilation to create quadrilateral A'B'C'D'. Which rule best represents the dilation that was applied to quadrilateral ABCD to create quadrilateral A'B'C'D'? A. B. C. D.

8 10. Sadie used a container shaped like a cylinder to catch rainwater. The dimensions of the container are shown below. Which measurement is closest to the volume of the container in cubic centimeters? F. 1,527 cm 3 G. 4,072 cm 3 H. 1, 018 cm 3 J. 3, 054 cm 3

9 11. In each diagram, line p is parallel to line f, and line t intersects lines p and f. Based on these diagrams, which statement is true? A. The value of x should be 75, because the angles shown in the diagrams are congruent. B. The value of x should be 105, because the measures of the angles shown in the diagrams add up to 180. C. The value of x should be 140, because the measures of the angles shown in the diagrams should add up to 360 and 360 ( ) = 140. D. The value of x should be 70, because the measures of the angles shown in the diagrams are both 70.

10 12. A figure is shown on the grid below. Which graph best represents this figure after it has been translated 5 units up and 3 units to the right? F. H. G. J.

11 13. The drawing below shows a side view of a picture frame on Mary s desk. Which of the following is closest to the length of the frame support? A. 20 cm B. 15 cm C. 12 cm D. 17 cm

12 14. Regina owns a drum that has a diameter of 14 inches and a height of 5.5 inches, as shown below. She wants to design a new drum by dilating the dimensions of the original drum by a scale factor of 1.4. What will be the diameter, d, and the height, h, of the new drum? F. d = 19.6 in. and h = 7.7 in. G. d = 15.4 in. and h = 6.9 in. H. d = 12.5 in. and h = 4 in. J. d = 22.5 in. and h = 14 in. 15. A can of juice contains 175 calories per 2.5 servings. Which of the following is NOT an equivalent number of calories per serving? A. 280 calories per 4 servings B. 910 calories per 13 servings C. 525 calories per 8 servings D. 630 calories per 9 servings

13 16. The graph models the value of a machine over a 10-year period. Which equation best represents the relationship between x, the age of the machine in years, and y, the value of the machine in dollars over this 10-year period? F. y = 0.002x + 2,500 G. y = 500x + 8,000 H. y = 500x + 8,000 J. y = 0.002x + 2,500

14 17. Gwendolyn placed a 10-foot ladder against the side of her house so that the base of the ladder was 3 feet from the base of the house, as shown in the diagram below. Which measurement in feet is closest to d, the distance from the top of the ladder to the ground? A ft B. 7.0 ft C. 6.5 ft D. 9.5 ft

15 18. During one month, four trees at a nursery increased in height at the rates shown below. Which list shows these rates in order from greatest to least? F. G. H. J.

16 19. Which graph best represents the equation y = 1.4x + 2? A. C. B. D. 20. Carlos has a square tablecloth with a total area of 48 square feet. Which measurement is closest to the length of each side of the tablecloth in feet? F. 9.8 ft G. 5.0 ft H ft J. 6.9 ft

17 21. Sakura has a birdhouse with rectangular walls, a rectangular bottom, and a rectangular entry, like the one modeled below. She will paint the four outside walls but not the bottom or the roof of the birdhouse. What is the area that Sakura will paint? A. 320 in. 2 B. 160 in. 2 C. 300 in. 2 D. 140 in. 2

18 22. Jake has two summer jobs. The table below shows how many hours he worked at the two jobs last week and his total earnings from each. This week Jake is scheduled to work 11 hours as a cashier and 17 hours as a grocery stocker. Based on the information in the table, what will be the total amount he earns from the two jobs if he works all the scheduled hours this week? F. $ G. $ H. $ J. $ To get from home to work, Felix can either take a bike path through the rectangular park or ride his bike along two sides of the park. How much farther would Felix travel by riding along two sides of the park than he would by taking the path through the park? A. 1.7 mi B. 0.6 mi C. 2.5 mi D. 0.1 mi

19 24. Sal purchased some art supplies and card stock in order to make greeting cards. The graph below shows the relationship between the number of cards Sal makes and the total cost of the materials used to make the cards. Based on the graph, what will be the total cost of making 25 greeting cards? F. $12.50 G. $50.00 H. $52.50 J. $ A cube is dilated by a scale factor of new cube is to create a new cube. The surface area of the A. B. C. D.

20 26. The money in Juan s savings account earns? interest. Which value is less than F. G. H. J. 27. In the diagram below, RSTU is a rectangle, and the two shaded regions are squares. If the length of is 4 m and the length of is 8 m, what is the length of in meters? A. B. C. D.

21 28. Dominic used the equation below to find d, the amount in dollars he would spend on gasoline to drive a distance of m miles. Based on this equation, how much would Dominic spend on gasoline to drive a distance of 180 miles? F. $25.20 G. $21.00 H. $24.50 J. $ Abdul is 5 feet tall. Which equation can be used to determine h, Abdul s height in centimeters, if 1 inch is equal to 2.54 centimeters? A. B. C. D.

22 30. Which list shows the numbers below in order from least to greatest? F. G. H. J. 31. 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. Which table shows the relationship between h, the number of hours John s brother works, and c, the total cost of the project? A. C. B. D.

23 32. A side view of a desk telephone is shown below. Which of the following is closest to the value of x? F. 2 cm G. 10 cm H. 20 cm J. 6 cm

24 33. The scatterplot below shows the relationship between the daily high temperature and the number of snow cones sold at a concession stand on that day. Based on the scatterplot, approximately how many snow cones will be sold on a day when the high temperature is 82 F? A. 63 B. 46 C. 29 D Claudia is making a gelatin dessert for a party. She plans on making 12 servings for every 5 people. If each pan Claudia uses to make the dessert holds 8 servings, what is the minimum number of these pans that she needs in order to make enough to feed 10 people? F. 4 G. 2 H. 3 J. 5