What is the best solution to the system of equation? 2x-y=7 y=2x+3

There is no solution.

Both graphs have the same slope, just at different y-intercepts. This means that the graphs will never touch, meaning there are no solutions.

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