CCSS.Math.Content.8.SP.A.3

Which panda will weigh more at 5 weeks?

• Mochi
• Kappa
• Po the dragon warrior
• Jack Black

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CCSS.Math.Content.8.SP.A.3

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

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CCSS.Math.Content.8.SP.A.3

Data was collected on the weight of a male  laboratory rat for the first 25 weeks after its birth. The linear regression equation is 
y= 40x+100, where x is number of weeks and y is weight in grams. 
What does the y-intercept mean in context of the problem?

• The predicted weight of the rat in year 0. 
• The predicted weight of the rat at birth. 
• The current weight of the rat. 
• The average increase in the rat's weight. 

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CCSS.Math.Content.8.SP.A.3

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters.

• 150 pages

• 170 pages

• 190 pages

• 210 pages

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CCSS.Math.Content.8.SP.A.3

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

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CCSS.Math.Content.8.SP.A.3

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

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CCSS.Math.Content.8.SP.A.3

The annual profits for a company are given in the following table, where x represents the number of years since 1992, and y represents the profit in thousands of dollars. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, estimate the year in which the profits would reach 378 thousand dollars.

• 2029

• 2014

• 2003

• 8753

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CCSS.Math.Content.8.SP.A.3

The chart below tracts starting salaries for health care workers since the year 2000. Based on a line of best fit, what is the expected salary in 2025. Hint: Use at least 2 decimal points in your equation.

• $49,100

• $48,300

• $51,200

• $47,700

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CCSS.Math.Content.8.SP.A.3

If each mark on the x-axis represents one second, when did the object reach the ground?

• 2.5 seconds

• 6 seconds

• 5.5 seconds

• 5 seconds

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CCSS.Math.Content.8.SP.A.3

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y= 10

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CCSS.Math.Content.8.SP.A.3