Determine if this equation 4x+17=12 is a function

Is there ever a time when the X is the same? if so, then it is not a function, if the X is never the same, it is a function.

Step-by-step explanation:

I'm sorry, but I'm to lazy to do the math right now, but maybe this will help?

345

step-by-step explanation:

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