A Glazed Doughnut Contains 230 Calories $\varnothing$

Short Answer

A glazed doughnut contains 230 calories. Suppose you eat two doughnuts, and then decide to exercise to burn off the calories. Use the given table to list all possible sets of exercises that will burn off the calories in 1 hour. Exercise Calories/hr Walking 150 Biking 420 Jogging 500 Enter your answers in set notation using w for walking , b for biking , and j for jogging . If there is more than one correct answer, separate them with commas. If there is no such set, enter $\varnothing$ .