Answer:
B) 29
Explanation:
We can get this one of two ways. Alternate interior angles are congruent (same measurement)
3x - 16 = 2x + 13 Subtract 2x from both sides
x - 16 = 13 Add 16 to both sides
x = 29
or
The two angles on top are supplemental. That means that they add to 180
3x - 16 + 4x - 7 = 180 Combine like terms
7x - 23 = 180 add 23 to both sides
7x = 203 Divide both sides by 7
x = 29