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A rectangular room is 10 feet longer than it is wide. One -foot -by-one -foot tiles cover the entire floor. Let w represent the width

A rectangular room is 10 feet longer than it is wide. One -foot -by-one -foot tiles cover the entire floor. Let w represent the width (in feet ) of the room. Write an expression in simplest form that represents the number of tiles along the outside of the room.

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