In 1979, iranian militant groups took
hostage in tehran
52 americans
american students
ayatollah khomeini
shah mohammad reza pahlavi

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?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.