Solve the system of equations below x-2y=3 2y-3y=9

The graph below could be the graph of which exponential function?

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?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?