A 25% tip was paid on a $30 meal. what is the amount of the tip

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 definition of exponential decay?

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12