Use absolute value to express the distance between −12 and −15 on the number line.
a.|−12 − (−15)| = −27
b.|−12 − (−15)| = −3
c.|−12 − (−15)| = 3
d.|−12 − (−15)| = 27

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

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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?