PLZ ANSWER QUICKLY!!!!!!!! What cosine function represents an amplitude of 3, a period of π, no horizontal shift, and a vertical shift of 2?

I know, my computer won't let me write the mathematical symbols right but here: 

f (x) = 3 cos (2x) + 2

I know I KNOW, the symbols aren't actually normal shaped like that but if they were, it'd basically be that.