y=-(x-2)(x-4) Vertex: y-intercept: x- intercept(s): Axis of symmetry: Domain: Range: -- Please explain your work! and if you can, add a graph, but if not I understand! Thank you!

()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