Each patron pays an annual fee of $36 to the library at the library collects $20,304 for an annual fee how many patrons are there

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?

Ihave trouble finding the nth term of a linear sequence

It says factor each expression completely 8y+48