I don’t understand someone please give me answer

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?

Awoman won a 4000-m race with a time of 12.089 min. what was her rate?

What is the equation of the line that passes through (3,5) and is parallel to y=2x+6