Agrocery store, the number of customers arriving per hour is shown by the
function f(x) = 2x + 1. find the number of customers that arrived in
the 6th hour.

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?