I would like the question In the picture explained and answered

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Whats the name of the vertical axis

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?