PLEASE I BEG YOU HELP ME I CANT FIGURE IT OUT AND IM LITERALLY HAVING A MENTAL BREAKDOWN RN BC OF THIS (pls check the other post as well pls)

Example Group #1

Use f(x) = 5x +4 and g(x) = 4- x

(f + g)(x)
What is your answer?

(f - g)(x)
What is your answer?


( this ones weird)

(f black dot g)(x)What is your answer?


(f/g(x)
What is your answer?​