Okay we need to know the number of degrees in this shape first in order to find x.
The formula to find the # of degrees in any polygon is
180 ( n - 2 )
n = the number of sides the figure has
This figure has 8 sides
180 ( 8 - 2 )
180 (6) = 1080°
This figure is 1080°
To find x, let's subtract all the other degrees they gave us
1080° - 124° - 136° - 132° - 129° - 116° - 158° - 141° = 144°
x = 144°
I hope I helped!
