Need confused about what they mean

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

()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 equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)