Answer:
3x+7+4x-16= 180 degrees
7x-9=180
7x=189
x= 27
yax= 3x+7
3*27+7= 81+7 = 88
A
Step-by-step explanation:
∠ YAX and ∠ WAZ are vertical angles and congruent, thus
4x - 16 = 3x + 7 ( subtract 3x from both sides )
x - 16 = 7 ( add 16 to both sides )
x = 23
Thus
∠ YAX = 3x + 7 = 3(23) + 7 = 69 + 7 = 76° → A
