Find the value of z.
A. 121
B. 363
C. 111
D. 108
I don't have much time ty!!

Answer:
A. 121
Step-by-step explanation:
The sum of the exterior angles is 360°, so you have ...
z + (z +10) + (z -13) = 360
3z -3 = 360 . . . . . collect terms
z -1 = 120 . . . . . . . divide by 3
z = 121 . . . . . . . . . add 1