Respuesta :

Answer:

Two. f = -13 or f = 17

Step-by-step explanation:

|f − 2| − 2 = 13

|f − 2| = 13 + 2

|f − 2| = 15

f − 2 = ±15

f = 2 ±15

f = 2 + 15 = 17 OR f = 2 - 15 = -13