How to sketch the inequalities and how to shade them

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.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base