sat scores were originally scaled so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100 what would be the z-score corresponding to a student who gets a section score of 680

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Complete the input-output table for the linear function y = 3x. complete the input-output table for the linear function y = 3x. a = b = c =