Can someone Help? Just Explain or do one side so I can figure out the rest. Thank You!​

Which system of linear inequalites is represented by the graph?

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

What can you determine about the solutions of this system