Help pls will give brainlist also show work if needed!

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

Given: x - 4x > 0, then the solution set in interval notation is: (-2, 0) true o false