What does a residual value of -0.8 mean in reference to the line of best fit ?

okay wait before i answer, is this for your points on a graph?

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

answer: i wpould go with c

step-by-step explanation: