21 Which interval notation represents the set of all numbers
greater than or equal to 5 and less than 12?

(1) [5, 12) (3) (5, 12)

(2) (5, 12] (4) [5, 12]

22 Four hundred licensed drivers participated in the math club’s survey on driving habits. The table below shows the number of drivers surveyed in each age group.

Which statement best describes a conclusion based on the data
in the table?

(1) It may be biased because no one younger than 16 was
surveyed.

(2) It would be fair because many different age groups were
surveyed.

(3) It would be fair because the survey was conducted by the
math club students.

(4) It may be biased because the majority of drivers surveyed
were in the younger age intervals.

25 Steve ran a distance of 150 meters in 1½ minutes. What is his speed in meters per hour?

(1) 6 (3) 100

(2) 60 (4) 6,000

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