4X-13=90
I need help. With this equation to find the measure of 90

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?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Write an equation for the function that includes the points (2,100)and (3,100)