What is an integer for negative four

Which fraction below is equivalent to 10/12?

What point is the projection of q on a) r b) s c) t

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?