Help with band work (key signatures)

I know all some of this, but I also have to do math, etc.
And I really want my grade to be great in band.
So can anyone help me?
I really don't have time to look through notes, etc.

The key of Ab major has ____ flat(s)/sharp(s)
The key of Gb major has ____ flat(s)/sharp(s)
The key of D major has ____ flat(s)/sharp(s)
The key of A major has ____ flat(s)/sharp(s)
The key of E major has ____ flat(s)/sharp(s)
The key of Db major has ____ flat(s)/sharp(s)

If the band is playing in concert E major, how many sharps or flats will the alto saxes be playing?

If you could help me out, it would mean alot!