Given the function f(x) = 4x + 9 evaluate f(1) f(2) and f(3) Is it true that

(i) f(1) + f(2) = f(1 + 2) * i

(ii) f(3) - f(2) = f * (3 - 2)!

(iii) f(1) * f(2) = f(1 * 2)

(iv) f(2) / f * (1) = f * (2/1)!