Question: Many people are interested in losing weight through exercise. An important fact to consider is that a person needs to burn off 3,500 calories more than he or she takes in to lose 1 pound, according to the American Dietetic Association. The following table shows the number of calories burned per hour (cal/h) for a variety of activities, where the figures are based on a 150-pound person.

Activity Cal/h

Bicycling 6mi/h 240

Bicycling 12mi/h 410

Cross country skiing 700

Jogging \(5\frac{1}{2}\) mi/h 740

Jog 7mi/h 920

Jumping Rope 750

Running in Place 650

Activity Cal/h

Running 10mi/h 1,280

Swimming 25yd/min 275

Swimming 50yd/min 500

Tennis (singles) 400

Walking 2mi/h 240

Walking 3mi/h 320

Walking \(4\frac{1}{2}\) mi/h 440

How many hours would a person have to jump rope in order to lose 1 pound? (Assume calorie consumption is just enough to maintain weight, with no activity.)