Consider the following Mobile IP network: $150-$users$/$sq$.$ mile, FA covers a square region of $10$ sq$.$ miles, the average velocity is $10$ miles$/$hour$,$ and the binding lifetime is $2$ minutes. If the binding lifetime is not reset when a mobile host registers due to movement, what is the percent of registrations due to mobility?

you need to find the total number of users and each user registration rate