Which of the following equations is in proper standard form?

-5x + 3y = 15

½x + 4y = 8

y = 3x + 4

2x - 3y = 6

y= 3x+4

Step-by-step explanation:

standard form is always y equals first

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