The apartment complex has 20 apartment per buildings 4 apartment are 3 bedroom apartment, 7 are 2 bedroom unit, and 9 apartment are 1 bedroom units. if the apartment complex builds 50 buildings how many 3 bedroom units would they have?

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

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