Radicals and Exponets

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?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .