Hi please help. I will really appreciate it!

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?

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.