Hello! remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any figure, so I'll choose the figure below in order to illustrate this problem. A composite polygon is a polygon that can be divided into two or more basic shapes. So here we have a composite polygon formed by a triangle and a rectangle. So:
IDK the constant and quantities... First, find how many hours it takes for him to grade 1 essay, 0.16. Then multiply that by 35 to get 5.6. I hope this is right -_-'