Answer: c) (-∞, 4) ∪ (5, ∞)
<u>Step-by-step explanation:</u>
There are two lines:
- The left line is between -∞ and 4 with an open dot at 4.
- The right line is between 5 and +∞ with an open dot at 5.
An open dot is represented with parenthesis ( ).
A closed dot is represented by brackets [ ].
<em>Positive and negative infinity are not actual numbers so they are always represented with parenthesis.</em>
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So, the left line is (-∞, 4) and the right line is (5, ∞)
