If EC $2.50 is equivalent to UD $1.00, then EC $25.00, in US dollars , is
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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 following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.