I don't understand this hw question.

We counted the number of McDonaldJs restaurants in each of the 50 US states, and plotted below a histogram of these 50 counts. All bars are 100 wide. The areas of the bars sum to 100%. 025 0.2 0.1 Percent per unit 005 u 200 on son 300 mm 1200 1400 1600 Number of restaurants Calculate each quantityr described below or write Unknown if there is not enough information above to express the quantityr as a single number {not a range}. It's OK to leave answers un-simplied. Show your work. {a} {2 pt} The percentage of states that have fewer than 100 McDonald's restaurants. {b} {2 pt} The number of states that have fewer than 100 McDonald's restaurants. {c} (2 pt} The number of states that have fewer than 150 McDonald's restaurants. {d} (4 pt} The number of states that have 200 or more McDonalds restaurants. (e1 [2 pt} The number of states that have 2000 or more McDonald's restaurants