Milan does a weekly exercise program consisting of cardiovascular work and weight training. Each week, he exercises for at least 10 hours. He spends at most 8 hours doing cardiovascular work. He spends at most 12
hours on weight training. Let denote the time (in hours) that Milan spends doing cardiovascular work. Let denote the time (in hours) that he spends on weight training. Shade the region corresponding to all values of and that satisfy these requirements