PLS HELPPP ITS DUE PLS HELP WITH THESE TWO QUESTIONS!

1. What is f(3)?
2. What is the given function?

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?

Solve the equation by completing the square. x^2+2x=17

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume