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David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

How is working backward similar to solving an equation?

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?