Charlie's apparel sells t-shirts in packs of 7. the stores competitor, alicia's basics, sells t-shirts in packs of 2. if both stores sold the same number of t-shirts yesterday, what is the smallest number of t-shirts each could have sold?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?