Does this graph represent a function? Why or why not? A. No, because it is not a straight line. B. Yes, because it has two straight lines. C. No, because it fails the vertical line test. D. Yes, because it passes the vertical line test.

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?