How high does the ball rise before falling?

[Goopy17]

Homework Statement

A ball is thrown straight up. If its initial velocity is 24m/s, how high does it rise before it begins falling down?

Homework Equations

The Attempt at a Solution

This one is very frustrating to me. My teacher doesn't teach us, he just gives us the homework and formulas. Please help!

 

[lewando]

So what formulas do you have that you think might be relevant?