Suppose y varies directly with x, and y = 21 when x = 3. Find x when y = 42.

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 - pv + 40 < 65 for v solve 7w - 3r = 15 for r

What is 1/2 x (6 x 4)+3 + 2 show your work