Answer:
C
Explanation:
To solve this problem, isolate x. Subtract 1 from both sides.
x + 1 < 5
x < 4
Now, find the graph that shows x < 4. We know two things:
- The graph must have an open circle on 4, as the sign is "less than", not "less than or equal to". The circle would be filled in if it was "less than or equal to".
- The arrow must be pointing to the left, as the sign is "less than", not "greater than". If it was "greater than", the arrow would be pointing to the right.
The only number line that fits this criteria is C.