Final answer:
If a person eats 2000 calories everyday and uses 3000 calories a day, they would lose approximately 29 pounds after 10 weeks.
Step-by-step explanation:
To determine the weight change after 10 weeks, we need to calculate the difference between the calories consumed and the calories used over that period of time. In this case, the person is eating 2000 calories per day and using 3000 calories per day, resulting in a daily deficit of 1000 calories. Since 1 lb of weight loss requires a deficit of 3500 calories, the person would lose approximately 2.9 lbs per week (1000 calories * 7 days / 3500 calories = 2.9 lbs). Over 10 weeks, the person would lose approximately 29 lbs.