What is the value of X?

x=98

Step-by-step explanation:

First find the total angle amount. Draw triangles with a point as a vertex.

As the attached file shows, this is how I did it.

Now, since there are 5 triangles. We get 5 x 180 or 900 degrees as the total angle sum.

Now subtract the angles from 900

900-142-146-122-140-110-142=x

simplify.

x=98

b, i believe, but not sure.