Sarah has $8 and wants to buy a combination of cupcakes and fudge to feed at least four siblings. each cupcake costs $2, and each piece of fudge costs $1. this system of inequalities models the scenario: 2x + y ≤ 8 x + y ≥ 4 part a: describe the graph of the system of inequalities, including shading and the types of lines graphed. provide a description of the solution set. (4 points) part b: is the point (8, 10) included in the solution area for the system? justify your answer mathematically. (3 points) part c: choose a point in the solution set and interpret what it means in terms of the real-world context. (3 points)