Hurry ASAP I need help The graph of y=f(x) is shown below. What are all of the real solutions of f(x)=o?

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?