Explain one way a geometric function is similar to an exponential function

The triangles are similar. what is the value of x? show your work.

Which statements about these triangles is true

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.