Why do you think that wall painting is very complex form of painting ?

Not much but here u go

Explanation:

complex forms that art historians had almost universally ac— cepted for decades. ... 1—11 Aurochs, horses, and rhinoceroses, wall painting in the Chauvet Cave, ... If the murals are the oldest paintings known, they exhibit surprisingly ...

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

cockroaches and rats most likely symbolize in the play is :