Two line segments intersect at point B as shown.
What is the measure of angle ABC?

the answer is b.) 24

Step-by-step explanation:

you would set 3x + 12 and 6x equal because they have the same angle

then subtract 12 on both sides

then subtract 6x from both sides

now just divide by 3 on both sides

then add it into the equation 3(4) + 12

based on context clues you gave i'm assuming the answer would be c.