PLS HELP simplify (2b^3)^2

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?

One positive number is 9 more than twice another. if their product is 95, find the numbers

What does the sign of the slope tell you about a line?