What is the frequency of the graph of the function
f(x) = 3 cos 4x?

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

What is negative 3/9 times negative 2/8 ?

‼️‼️‼️10 points‼️‼️‼️ me it’s important‼️‼️‼️‼️‼️