The value of 7 in 2.726

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?

Solve the inequality and graph 6j - 7 < 5

Which expression converts 45 degree to radians