Question

In order to safely lose two pounds per week, how many calories would need to be reduced to achieve this two-pound loss in a week?
Answer

7000

2500

5000

3500

Answer 1

A pound of fat corresponds to about 3500 calories, so two pounds of fat correspond to about 7000 calories.

Answer 2

That's the math, anyway. In reality, even if you totally 500 calories per day from your diet, your weight loss will decrease asymptotically as your body makes metabolic changes to compensate and try to preserve its energy stores.