Answer:
B) 28°
Step-by-step explanation:
By part whole postulate,
m<EFG = m<EFK + m<KFG
plug in values of all angles,
138° = 9x+11+3x-5
12x+6=138
12x=138-6
12x=132
x=132/12
x=11
m<KFG = 3x-5 = 3*11-5 = 33-5 = 28°
