Math Face Off

Monday, April 19, 2010

Math Analysis Ms. Cowan

Linear Equations1. Which value for x makes the sentence true?11x = 8x + 27

A. 81B. 24C. 9D. 1

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Coordinate System2. What are the coordinates of the point labeled O?

A. (7,-2)B. (-2,-7)C. (-7,-2)D. (2,-7)

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Central Tendency3. What is the mode of the following set of numbers? 59, 79, 94, 59, 79, 110, 79, 124, 94, 124

A. 79B. 59C. 85.375D. 124

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Interpret Graphs4. The line plot below shows the grade distribution from Friday's ten question quiz. Each X represents 1 student. How many more students scored a 90 than scored a 60?

A. 4 more studentsB. 2 more studentsC. 3 more studentsD. 5 more students

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5. What type of graph is shown above?

A. histogramB. bar graphC. stem-and-leaf plotD. scatter plot

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Box-and-Whisker Plots6. The parts of the box-and-whisker plot above are labeled. Which feature of the data is represented by part A?

A. outlierB. lower quartileC. lowest valueD. upper quartile

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7. Which list of numbers is in order from least to greatest?

A. -2,264 , -2,236 , -2,246 , -2,219B. -2,264 , -2,246 , -2,236 , -2,219C. -2,219 , -2,236 , -2,246 , -2,264D. -2,264 , -2,246 , -2,219 , -2,236

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8. Simplify the following expression:(-10) × (-8)

A. 18B. -80C. -18D. 80

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9. John has 7 boxes of apples. Each box holds 16 apples. If 5 of the boxes are full, and 2 of the boxes are half full, how many apples does John have?

A. 112B. 39C. 96D. 56

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Algebraic Expressions10. If a = -1, b = 4, and c = -7, what is the value of the expression below? a + 6bc - 2c

A. -158B. -156C. -154D. -155

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Variable Relationships11. In the following function, if x decreases, how is y affected? y = 3x

A. y increasesB. y decreasesC. y remains constantD. y equals x

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Central Tendency12. What is the median of the following set of numbers? 48, 44, 50, 46, 44, 44, 42, 52, 48

A. 40B. 44C. 48D. 46

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Interpret Graphs13. How many DVDs were sold on Wednesday?

A. 31B. 32C. 25D. 22

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14. Christina wants to know if there is a correlation between a person's age and their height. She collected some data and displayed it in the scatter plot below. What can be interpreted from this data?

A. There is no correlation between a person's age and their height

B. There is a positive correlation between a person's age and their height

C. There is both a positive and negative correlation between a person's age and their height

D. There is a negative correlation between a person's age and their height

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15. The box-and-whisker plot below represents the scores for two basketball teams throughout an entire season of games. Which score represents the lower quartile for the Red Hawks?

A. 85 pointsB. 65 pointsC. 75 pointsD. 80 points

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Compare & Order Numbers16. Which list of numbers is in order from least to greatest?

A. 670.92 , 670.892 , 672.09 , 672.089

B. 670.892 , 670.92 , 672.089 , 672.09

C. 670.92 , 670.892 , 672.089 , 672.09

D. 672.09 , 670.892 , 670.92 , 672.089

Compute Solutions17.    70 × -0.06

A. -4.2B. -420C. -42D. -0.42

Algebraic Expressions18. Simplify the following expression.(3x - 20y) + (30x + 53y)

A. 23x + 83yB. 33x + 73yC. 33x + 33yD. 17x + 83y

Central Tendency19. What is the interquartile range of the following data set?44, 49, 54, 61, 59, 47, 47

A. 12B. 49C. 47D. 15E. 56

Scatter Plots20. Lisa wants to know if there is a correlation between a person's weight and his or her test score. She collected some data and displayed it in the scatter plot below.

What can be interpreted from this data?A. There is a positive correlation between a person's weight and

his or her test score.B. There is a negative correlation between a person's weight

and his or her test score.C. There is both a positive and negative correlation between a

person's weight and his or her test score.D. There is no correlation between a person's weight and his or

her test score.

Box-and-Whisker Plots21. The box-and-whisker plot below represents the monthly distribution of test grades for two classes.

Which of the following statements is true, based on the box-and-whisker plot?

A. The two classes have the same upper quartile.B. The two classes have the same median.C. The two classes have the same lower quartile.D. The two classes have the same upper extreme.

Compute Solutions22.    9/6 + 9/6

A. 1 2/7

B. 3C. 1D. 1 2/3

3-Dimensional Objects23. Which of the following best describes a vertical cross-section of the cone above?

A. circleB. cylinderC. triangleD. rectangle

Linear Equations24. 4(7x + 5) = 6xWhat is the first step when solving the above equation for x?

A. Add 4 to each side.B. Subtract 4 from each side.C. Multiply each side by 4.D. Distribute the 4.

Central Tendency25. What is the range of the following set of numbers? 47, 38, 48, 44, 43, 41, 40, 50, 41

A. 7B. 9C. 6D. 12

Interpret Graphs26. Anna's Flower Farm conducted a study to compare the effect of 3 different fertilizers on flowers' growth. Their results are shown below.

What is the difference, in centimeters, between Gro Strong's effect on all 3 flower types and Happy Hill's effect on the 3 types?

A. 5 cmB. 40 cmC. -5 cmD. 55 cm

Scatter Plots27. A trainer wants to determine if there is a correlation between the amount of sleep an athlete gets and the number of sit-ups the athlete can complete.

What can be interpreted from this data?A. There is both a positive and a negative correlation between

the amount of sleep and the number of sit-ups completed.B. There is no correlation between the amount of sleep and the

number of sit-ups completed.C. There is a negative correlation between the amount of sleep

and the number of sit-ups completed.D. There is a positive correlation between the amount of sleep

and the number of sit-ups completed.

Absolute Value28. Simplify:     -|-7|

A. -0.7B. -7C. 0D. 7

Compare & Order Numbers29. Which list of numbers is in order from least to greatest?

A. 4/6, 2/9, 0.3333...B. 2/9, 0.3333..., 4/6

C. 2/9, 4/6, 0.3333...D. 0.3333..., 2/9, 4/6

Compute Solutions30.  Simplify the following expression: 9 + (-19)

A. -28B. 28C. 10D. -10

Scholars,Remember to double check your work. . .