Question

what compound inequality describes this graph?
16 17 18 19 20 21
write a compound inequality like 1 < x < 3 or like x < 1 or x > 3.

< ≥ ≤

= and or
submit

Explanation:

Step1: Analyze left endpoint

The closed dot at 18 means $x$ includes 18, so $x \geq 18$.

Step2: Analyze right endpoint

The open dot at 19 means $x$ excludes 19, so $x < 19$.

Step3: Combine inequalities

The segment connects the points, so use "and".

Answer:

$18 \leq x < 19$