What energy source is used to produce most of the electricity we use today? a fossil fuels b geothermal energy c falling water d wind

Which is the completely factored from of xy^3-x^3y

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?

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have