Given the set sketched on the number line, identify the type of interval (open, closed, half-open, open infinite, closed infinite), write the set using set-builder notation, and write the set using interval notation.
A. half-open interval; {x|-6 < x ? -2}; (-6, -2]
B. closed interval; {x|-6 ? x ? -2}; [-6, -2]
C. open interval; {x|-6 < x < -2}; (-6, -2)
D. half-open interval; {x|-6 ? x < -2}; [-6, -2)
Answer: A
Mathematics
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; r(1)
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A. 
B. 
C. 
D. 
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