ACT Aspire Math (Grade 8)

150 students were surveyed and asked whether they played a sport and whether they played a musical instrument. The results are shown in the table above.

What fraction of the students who play an instrument but do not play a sport?

Out of 1,000 plants, some were given a new fertilizer and the rest were given no fertilizer. Some of the plants lived and some of them died, as shown in the table above.

Which of the following statements is supported by the data?

• Fertilized plants died at a higher rate than unfertilized plants did.

• Fertilized plants and unfertilized plants died at the same rate.

• Fertilized plants died at a lower rate than unfertilized plants died.

• None of the statements can be supported by the data.

Tags

CCSS.8.SP.A.4

A linear function includes the ordered pairs (2, 5), (6, 7), and (k, 11). What is the value of k?

• 8

• 10

• 12

• 14

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

A set of instructions says to subtract 5 from a number n and then double that result, calling the final result p. Which function rule represents this set of instructions?

• p = 2(n – 5)

• p = 2n – 5

• n = 2(p – 5)

• n = 2p – 5

Tags

CCSS.HSF-BF.A.1A

Which of the following scatter plots below demonstrates the same type of data correlation as the one shown above?

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• 
• 
• 

Tags

CCSS.HSS.ID.B.5

Which of the following is NOT a function?

• {(2, 3), (4, 7), (8, 6)}

• {(2, 2), (4, 4), (8, 8)}

•  {(2, 3), (4, 3), (8, 3)}

• {(2, 3), (2, 7), (8, 6)}

Tags

CCSS.8.F.A.1

Which of the following statements is NOT true.

• A transformation which preserves congruence may be a rotation.

• A transformation which preserves congruence may be a translation.

• A transformation which preserves congruence may be a dilation.

• A transformation which preserves congruence may be a reflection.

Tags

CCSS.HSG.CO.A.2

The point (4, 3) is rotated 90^o clockwise about the origin. What are the coordinates of the resulting point?

•  (-3, 4)

• (-4, 3)

•  (4, -3)

• (3, -4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which of the following functions is represented by the values in the table?

• f(x) = x² + 1

• f(x) = x + 1

• f(x) = 2x + 1

• f(x) = 3x + 1

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The weather was observed for 30 days; each day was classified as sunny or cloudy, and also classified as windy or not windy. The results are shown in the table above.

Which of the following statements is NOT supported by the data?

• 25% of the sunny days were also windy.

• 30% of the days were windy.

• 40% of the cloudy days were also windy.

• 50% of the windy days were also sunny.

Tags

CCSS.8.SP.A.4