Which point is collinear with points a and b?

step-by-step explanation:

points are on the ab line.

point r lies on the ab line.

therefore, point r is collinear with points a and b.

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