Which equation represents a line which is parallel to y=0? A x=1
B y=x
C y= x+3
D y=6

What value of x is in the solution set of –5x – 15 > 10 + 20x?

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?

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.