For what values of x is the graph of y equals negative 3 divided by the quantity 4 plus x concave downward?

the f

last graph i believe

step-by-step explanation:

worked it out i believe

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

step-by-step explanation:

are ya tryin to ask something or is this a statement