Answer:
102
Step-by-step explanation:
78 and x are adjacent angles.
Sum of adjacent angles is 180 in a parallelogram.
78 + x = 180
x = 180 - 78
x = 102
Answer:
Slope: 
Y-Intercept: 
Step-by-step explanation:
~Hope this helps .^.~
I need to know which question it is though
The answer is C 84. Your welcome