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Mathematics 19 Online
OpenStudy (anonymous):

Solve the inequality 7 < x + 1 _< 9

OpenStudy (anonymous):

6<x<8 === > solution interval = (6,8)

OpenStudy (anonymous):

If the second part is ≤ then you want the notation (6,8] because the 8 is included.

OpenStudy (anonymous):

you are right when the sign is =< , it's not clear here weather it's a missed sign or what

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