What is a linear system?

Step-by-step explanation:✏ Linear systems are systems of equations in which the variables are never multiplied with each other but only with constants and then summed up.

For example, the propagation medium for wireless communication systems can often be modeled by linear systems...!

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