Mark read 9 books over the summer. He recorded the number of pages he read and the number of hours he spent reading each book. This information and a line of best fit are shown in the scatter plot above. Based on the scatter plot, which statement about the time Mark spent reading would likely be true?

There is a strong positive association between the number of pages Mark read and the number of hours he spent reading.

There is no association between the number of pages Mark read and the number of hours he spent reading.

A linear association does not exist between the number of pages Mark read and the number of hours he spent reading.

There is a strong negative association between the number of pages Mark read and the number of hours he spent reading.

A cell phone company is offering a plan for unlimited talk and text, with an additional charge for data that can be represented by the function, C = 5.99g + 25, where C represents the cost, in dollars, and g represents the number of gigabytes of data. What is the meaning of 5.99 in the function? Select all that apply.

the unit rate for a gigabyte of data

the cost of the plan for unlimited talk and text

A cell phone company is offering a plan for unlimited talk and text, with an additional charge for data that can be represented by the function, C = 5.99g + 25, where C represents the cost, in dollars, and g represents the number of gigabytes of data. What is the meaning of 25 in the function? Select all that apply.

the cost of the plan for unlimited talk and text

the unit rate for a gigabyte of data

A cell phone company is offering a plan for unlimited talk and text, with an additional charge for data that can be represented by the function, C = 6.25g + 25, where C represents the cost, in dollars, and g represents the number of gigabytes of data. What is the meaning of 6.25 in the function? Select all that apply.

the unit rate for a gigabyte of data

the cost of the plan for unlimited talk and text

The equation y = 1.26 x + 9.49 models the approximate height of a plant in centimeters after x weeks. Which statements are true about the linear model? Select all that apply.

The initial height of the plant is 9.49 centimeters.

The plant grows about 1.26 centimeters each week.

The plant grows a total of 1.26 centimeters.

The initial height of the plant is 1.26 centimeters.

The plant grows about 9.49 centimeters each week.

The scatter plot contains data showing how many water drops various plants need per day based on their distance from a sunny window. The line of best fit has been drawn on the graph and labeled with its equation y = -1.63x + 27.85. What does the slope of the line of best fit represent in this context?

A plant requires 1.63 fewer drops of water for each inch of distance between the plant and the sunny window.

The number of drops of water required if the plant is 0 inches from the window.

A plant requires 1.63 fewer drops of water for every 27.85 inches of distance between the plant and the sunny window.

A plant requires 1.63 more drops of water for each inch of distance between the plant and the sunny window.

What does the y-intercept of the line of best fit represent in this context?

The number of drops of water that is required if the plant is 0 inches from the sunny window.

A plant requires 1.63 drops of water for every 27.85 inches of distance between the plant and the sunny window.

The number of inches between the plant and the sunny window that requires 0 drops of water per day.

The y-intercept is meaningless in this context.

A cell phone company is offering a plan for unlimited talk and text, with an additional charge for data. The function C = 4.50g + 20 represents the total cost C in dollars for a plan using g gigabytes of data. What is the meaning of 4.50 in this context? Select all that apply.

the unit rate for a gigabyte of data

the base cost of the plan for umlimited talk and text

A cell phone company is offering a plan for unlimited talk and text, with an additional charge for data. The function C = 4.50g + 20 represents the total cost C in dollars for a plan using g gigabytes of data. What is the meaning of 20 in the function? Select all that apply.

the base cost of the plan for unlimited talk and text

the unit rate for a gigabyte of data

Eric planted a seedling in his garden and recorded its height each week. The equation shown can be used to estimate the height, h , in inches, of the seedling by the end of each week, w , after it was planted. What does the slope of the graph of the equation represent?

the increase in the height, in inches, of the seedling each week

the height, in inches, of the seedling after w weeks

the height, in inches, of the seedling when Eric first planted it

the total increase in the height, in inches, of the seedling after w weeks

The table shows the results of a random survey of students in grade 7 and grade 8. Every student surveyed gave a response. Each student was asked if he or she exercised less than 5 hours last week or 5 or more hours last week. Based on the results of the survey, which statements are true? Select each correct statement.

A total of 221 students were surveyed.

Less than 50% of the grade 8 students surveyed exercised 5 or more hours last week.

More grade 8 students were surveyed than grade 7 students.

More than 50% of the students surveyed exercised less than 5 hours last week.

A total of 107 grade 7 students were surveyed.

Shown in the table below are the results from a survey asking visitors at an art museum whether they prefer Impression or Modern Art. Based on the data in the table, which statement is true?

More than 55% of adults surveyed prefer Impression Art.

Less than 45% of students surveyed prefer Modern Art.

More than 70% of adults surveyed prefer Impression Art.

Less than 40% of students and adults surveyed prefer Modern Art.

An amusement park features 2 roller coasters, the Cyclone and the Tsunami. The owners of the park conducted a survey to determine which roller coaster patrons preferred. The results are shown in the table. Based on the results of the survey, which statement(s) is (are) true? Select ALL that apply.

A total of 300 patrons were surveyed

More teenagers were surveyed than adults.

More than 50% of the adults surveyed preferred the Cyclone over the Tsunami.

Both teenagers and adults preferred the Tsunami over the Cyclone.

Of the total number of patrons surveyed, 32% preferred the Tsunami.

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Mathematics

8th Grade

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36 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Amy correctly made a scatter plot of the data in the table. Which statement is true based on her scatter plot of the data in the table?

There is at least one outlier

There is a nonlinear association.

There is a positive linear association.

There is a negative linear association.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What are the coordinates of the outlier?

(0,3)

(1,1)

(8,3)

(9,10)

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Which statement describes the pattern in the scatter plot? Sellect all that apply.

There is an outlier in the data.

There is clustering in the data.

There is a linear association in the data

There is a positive association in the data.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which pattern describes the association between birth year and life expectancy correctly ?

The association between the two variables is negative and linear.

The association between the two variables is negative and nonlinear.

The association between the two variables is positive and linear.

There is no association between the two variables.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A farmer tracked the number of eggs her flock of hens laid in 1 week. She found a negative linear association between the age of a laying hen and the average number of eggs the hen produced in 1 week. Which scatter plot best represents the relationship between the number of eggs laid and the age of the hen ?

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

According to the data, there is a negative association between the age of the child and the recommended hours of sleep per night.

True

False

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Which of the following statements correctly describe the scatter plot shown? Select all that apply.

There are no outliers.

The scatter plot shows a linear association.

The scatter plot shows a positive association.

The scatter plot shows no association.

The scatter plot shows a negative association.

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Bootcamp SP

Amy correctly made a scatter plot of the data in the table. Which statement is true based on her scatter plot of the data in the table?

What are the coordinates of the outlier?

Which statement describes the pattern in the scatter plot? Sellect all that apply.

Which pattern describes the association between birth year and life expectancy correctly ?

According to the data, there is a negative association between the age of the child and the recommended hours of sleep per night.

Which of the following statements correctly describe the scatter plot shown? Select all that apply.

Which graph shows the best linear model of the data in the scatter plot?

Which equation best models the data?

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