A number h added to -3 is at most 3.4

The sum of two numbers is 86, and their difference is 20. find the two numbers

What is the solution of the systems of equations? y=2/3x+3 x=-2

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.