Please solve this qn.

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

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?

The quadratic function h(t)=-16.1t^2+150 choose the graph representation