Question

I need help with this practice from my ACT prep guide onlineI’m having trouble solving it It asks to graph, if you can, use Desmos

Answer 1

Given:

$f(x)=-4\cos (\frac{2}{3}x+\frac{\pi}{3})-3$

Graph of function is cos from.

Period of the function is:

Check for period inter.

$=3\pi$