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Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

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?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?