Answer:
C. 2(x + 10)(x - 10)
Step-by-step explanation:

1. statement: angles 1 and 2 are supplementary, reason: adjacent angles on a straight line are supplementary
2. reason: Vertical angles are congruent
3. reason: Parallel lines for supplementary interior angles on the same side as the transverse
4. statement:angles 1 and 5 are equal reason:If two angles are supplementary to the same angle, they are congruent
C. add 3 to 15 because the sequence is +3 every time
3/4 because it’s parallel so it has the same slope. It just doesn’t pass through the same line.
Answer:
89
Step-by-step explanation: