It’s A. 13
hope this helps
x = 9
Since M is the midpoint of XY:
XM = MY
XM = 2x + 11
MY = 5x - 16
2x + 11 = 5x - 16
5x - 2x = 11 + 16
3x = 27
x = 27/3
x = 8
Learn more here: brainly.com/question/18315903
Other method:
Look at the picture.