Written description for the expression 3(5-x)

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?

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

How do you determine if an ordered pair is a solution to a given equation?