Help with the class width, the lower class limit and the upper class limit

Submit QUIZ The histogram to the right represents the weights (in pounds) of members of a O certain high-school debate team. What is the class width? What are the approximate lower and upper class limits of Frequency the first class? 110 130 150 170 190 210 230 250 Weight (lbs) What is the class width? The class width is (Simplify your answer.) What are the approximate lower and upper class limits of the first class? The approximate lower class limit is The approximate upper class limit is (Simplify your answers.)