Which value of x will make the equation 12x-30=6 true

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?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.