Respuesta :

Answer is D. f(x) = x + 1

when x = -1, f(-1) = -1 + 1 = 0
when x = 0, f(0) = 0 + 1 = 1
when x = 1, f(1) = 1 + 1 = 2
when x = 2, f(2) = 2 + 1 = 3

Hope it helps