-4n + 5n what is the answer

The answer would be n

Step-by-step explanation:

If you add a negative to a positive it will be the same as subtracting

So in this case it pretty much says 5n - 4n

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

you have to put the graph on here with the question

step-by-step explanation: