If x represents a positive interger, whose expression has the lowest value​

These question are hard can you me with answers

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?

What is the area of triangle abc if a = 8, b = 11, and c = 15?