These are all questions from my homework, I need help solving them because no matter where I looked I couldn't find the answer on the notes. Help is much appreciated, thank you.

Find the values of y: 3y^3(y^2+ 2/3y)=0

Use the given information to determine the exact trigonometric value.

On friday, there were x students at the baseball game. on monday, there were half as many students at the game as there were on friday. on wednesday, there were 32 fewer students at the game as there were on friday. which expression could represent the total number of tickets sold for all 3 games?