What does X equal please help I don’t want to do summer school!!!

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.

What is the y-intercept of the line given by the equation

How to find the exponential function y=ca^x, with points (1,2) and (2,1)