Of bisects eof. eof=y+30 and fog=3y-50. solve for y.

It always helps to draw a picture. Given the information, Segment OF is the center line that is bisecting this angle.

Since it's bisecting (cutting in half)... we can simply set the two angles equal to each other.

y+30=3y-50
-2y+30=-50
-2y=-80
y = 40

C)40.

1+1=22×1=22-1=11-1=1duh