Please answer these questions!

You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?

(40 points) i need some . an answer definition is appreciated as well.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.