Which shows the pre-image of triangle x'y'z' before the figure was rotated 90° about the origin?

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?

In the diagram below, tan θ = sqrt 3. what is the value of m?

How many days was the temperature above 90 degrees?