If you toss a number cube 300 times, about how many times do you expect to get a 5?

Which of the following lines is not parallel to the graph of y = 4x +7?

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?