I need help answering these questions and I have no idea what I’m doing. PLZ HELP GRADES ARE DUE IN TWO DAYS!!

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points