Question 4
part a
describe a relationship that can be modeled by the function represented by the graph, and explain how the function models the relationship. a function that is a straight line between the points (0, 38) and (15, 38); the function forms an upward-opening parabola between the points (15, 38) and (65, 17). from there, the function forms a straight line from the point (65,17) to (87,30) and continues off the graph.
part b
identify and interpret the key features of the function in the context of the situation you described in part a.

Part a what is the area of triangle i? show your calculation. part b triangles i and ii are congruent (of the same size and shape). what is the total area of triangles i and ii? show your calculation. part c what is the area of rectangle i? show your calculation. part d what is the area of rectangle ii? show your calculation. part e rectangles i and iii have the same size and shape. what is the total area of rectangles i and iii? show your calculation. part f what is the total area of all the rectangles? show your calculation. part g what areas do you need to know to find the surface area of the prism? part h what is the surface area of the prism? show your calculation. part i read this statement: “if you multiply the area of one rectangle in the figure by 3, you’ll get the total area of the rectangles.” is this statement true or false? why? part j read this statement: “if you multiply the area of one triangle in the figure by 2, you’ll get the total area of the triangles.” is this statement true or false? why?