-4(3) + 15
7+3(0.5)
40-(2.5)

 27

   8.5

+37.5

     73

Step-by-step explanation:

answer: (1,3) and (-2,0) i think.

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