Respuesta :

f(k)= k/2+1

Use the substitution method

f(-6)= -6/2+1

Cross out -6 and 2 , divide by 2

-6/2= -3

2/2= 1

-6/2=-3/1=-3

f(-6)= -3+1

Answer: f(-6)= -2

The answer should be -2