Both solutions parts will be combined and shown together, because OR is used. Any values which satisfy either or both inequalities will be part of the solution set.
OR
Put them together combined with OR,
, which is not in "interval notation".
The empty parentheses is an unfilled point value. The single dotted line is unfilled set of continuous values. The dotted double line is "filled" values, continuous. The left and right arrows and the arrow head indicating continuation of the points for the solution in that direction.
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0 1 3