The biological half life of caffeine, the time requires for the body to eliminate one-half of the total amount of caffein, for an individual is 5 hours. which statement about the caffeine in the individual's body is correct?

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?

Does the point (1, sqrt 7) lie on circle shown.

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39