Can somebody me with this question?

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Find the values of y: 3y^3(y^2+ 2/3y)=0

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that