georgina works on the 30th floor of a office building she took the elevator to the cafeteria on the 7th floor how many floors di
2 answers:
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Answer:
B
Step-by-step explanation:
The closed circle at - indicates that x can equal this value
The open circle at indicates that x cannot equal this value.
All values of x between - and
are valid, thus
- ≤ x <
→ B