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dalvyx [7]
3 years ago
5

11.

Mathematics
1 answer:
serg [7]3 years ago
3 0

Answer:

D. x<=–7

Step-by-step explanation:

An open circle at the end of an interval means that the end point is not included in the interval, i.e. strictly less than or strictly greater than. A closed circle means the end point is included. Also to know is, what does an open circle mean?

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<u>Co-planer</u>

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