Question

1. domain: range:

Explanation:

Step1: Identify domain from graph

The graph has an open dot at $x=3$ and extends left infinitely, so all real numbers $x < 3$.

Step2: Identify range from graph

The graph approaches $y=16$ from below and extends downward infinitely, so all real numbers $y < 16$.

Answer:

Domain: $(-\infty, 3)$
Range: $(-\infty, 16)$