Chapter 3 - Solving Inequalities - 3-6 Compound Inequalities - Practice and Problem-Solving Exercises - Page 205: 50

Sedentary: (0, 2200] Moderate: [2400, 2800] Active: [2800, 3200]

At most, a sedentary male should eat 2200 calories. Since the statement says "at most", we use a brace to show the limit is 2200. A moderate male should consume between 2400 and 2800 calories, which means we use braces on both the 2400 and 2800 calories to show those numbers are limits. An active male should consume between 2800 and 3200 calories, which means we use braces on both the 2800 and 3200 calories to show those numbers are limits.