I WILL BRAINLIST ITS ONLY ONE PROBLEM

Mary had at least an 80% on her test write an inequality to represent this situation

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?

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?