if a 47-51 year old mother who had a live birth in 2015 is randomly selected, how many live births would you expect the mother to have had

On any given day, the number of users, u, that access a certain website can be represented by the inequality 1125-4530 which of the following represents the range of users that access the website each day? u> 95 or u < 155 95> u> 155 u< 95 or > 155 95

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Having a hard time understanding this question (see attachment).