10 points need help asap

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?

Explain why the factor 1.5 is broke. into two numbers in the model.

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5