Math

15 points
please help

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?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =