Answer: C:120
Step-by-step explanation:
y and 2x are equal because of alternate exterior angles, so the same would apply to x because x is the angle on the other side of the transversal line, so 3x would be 180, 2x will be 120 so... y=120
y=2x
2x+x=3x
180/3=60
60*2=120
120=2x=y
y=120
