X¹ =3x-4y
y¹ =4x-7y
when x(0) =-3 , y(0) = 5/2

answer: there are 453.592 grams in a pound.

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