What is a solution to the system of linear equations?

(-3,0)
(-3,3)
(0,2)
(3,1)

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?

Ineed no it anyone can see this

What is the gcf of 20c^3-5c^4+30c^6