What expression means two less than three times a number?

Use set buikder notation to represent the following set: {, -2, -1, 0}

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?