Can someone please help me with this

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

How can you construct perpendicular lines and prove theorems about perpendicular lines