Yoshi is making a picture graph. each picture of a soccer ball stands for two goals he scored for his team. the row for january has 9 soccer balls. how many goals did yoshi score during january?

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?