Answer
Local maximum : $(4,16)$
Domain: $\mathbb{R}$
Range: $(-\infty,16)$
Work Step by Step
Graph utility used: desmos online calculator.
(View window and other settings are set pressing the "wrench" icon)
(see below)
Local maximum : $(4,16)$
Domain: $\mathbb{R}$
Range: $(-\infty,16)$
