If s(x) = 2 - x2 and t(x) = 3x, which value is equivalent to (st)(-7)

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?

Select the quadratic that has root x = 8 and x = -5

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)