Cuanto es 1/3 mas 3/4 mas 1/2 lo necesito por favor ;_;

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)