Find the value of y.
6
B
5
y
С
y = V[?]

What expression is equivalent to 42x-56y

Ill mark the brainliest if you me with the these three questions 7,8,9

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?