Does anybody know this?

  see attached

Step-by-step explanation:

Reflection in the line y=1 is accomplished by the transformation ...

  (x, y) ⇒ (x, 2 -y)

Each point in the image is as far below the line as the original point is above the line.

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540