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.

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.