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|2 < x ? 8}; (2, 8]
B. closed interval; {x|2 ? x ? 8}; [2, 8]
C. open interval; {x|2 < x < 8}; (2, 8)
D. half-open interval; {x|2 ? x < 8}; [2, 8)
Answer: D
Mathematics
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