My teacher wrote the answer on the right but he wants me to show how he did it

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?

What is the x-intercept and y-intercept of the equation 2x+1. 2o

Solve -.016x= -16. need solving this