Which is the correct answer? Note: (if you give me a silly or absurd answer I will report you)​

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

What percent of the circle below is shaded?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.