Jacob, Sam and Marcelo are neighbours who works as purchasing managers in different companies in the petrochemical industry. During one neighbourly discussion, Jacob learned that Sam salary was nearly 15% higher than his even though their job duties were similar. Jacob was upset about Sam's higher salary although he hid his emotions from Sam. Jack was frustrated not only because Sam received a significantly higher salary but also because Jack was certain that he worked longer hours and was more productive than Sam. According to equity theory research, predict 5 actions Jack most likely do to reduce his upset feelings?