Hey!
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Open Dot - (< less than) or (> greater than)
Closed Dot - (≤ less than or equal to) or (≥ greater than or equal to)
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Solution:
Then number-line shows a closed dot at 4.5. This shows that x is a number that is less than or equal to 4.5!
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Answer:
B. x
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Hope This Helped! Good Luck!