Wthis question. will mark brainliest + 10 points.
#11

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?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?