Help I do not understand

2- The equation of two functions are f (x) = x + 2 2 g(x) =(x+2) -6 I) Evaluate each expression I) f (3(2)) u) %(3) b) Determine a simplified algebraic model for each function I) y = N) + six) I!) y = fix)g(x) Ill) y= (1'0 sh)