Answer: P = 14.5+4x Step-by-step explanation: Let the width of the room is x. Length = 7.25 feet longer than the width = 7.25 +x We need to find an expression the represents the perimeter of the room. Perimeter = sum of all sides P = 2(l+b) l is length and b is width P = 2(7.25 +x+x) =2(7.25 +2x) =14.5+4x Hence, the required expression for the perimeter is 14.5+4x.
Because of the fact that the room is 7.25ft longer than the width which is x, there are 2 of x. One on the width one on the length. SInce the length is 7.25 longer it would be 2x + 7.25
