There are 202 students in all the chemistry classes combined. 11% have an A average 29% have a B average and 39% have a C average everyone else has an F. How many students are failing chemistry

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?