Question in picture attached

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?

Solve 2^x=32 and rewrite this equation in a logarithmic form

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8