Imagine that you are in a room that is filling up with waterthere are NO windows, and NO doors... How do you get out?

PLEASE HELP DUE SOON

look everywhere if you can find a door try to break it.

First you should clog the spout where the water is coming in and then attempt to break the roof or a wall.

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4