Answer:B
Step-by-step explanation:
This is a guess, so if it's not right, I completely apologize.
I suppose the answer is C) The 1st angle is a right angle; definition of _|_.
3x + (2x - 25) = 180
5x - 25 = 180
5x - 25 + 25 = 180 + 25
5x = 205
5x / 5 = 205 / 5
X = 41
Hope that is right, sorry if it’s not
Supplementary means it equals 180 degrees