Answer:
C. φ
Step-by-step explanation:

Thus
can replace x
An obtuse angle which is greater than 90 degrees and less than 180 degrees.
You have to use the substitution method by substituting one Y value with the other
Answer:
2x+8-2y
Step-by-step explanation:
4x-2x+5+3-2y
2x+8-2y