Write an expression for the amount of change you will get when you pay for a purchase p with a $20 bill. make a table to find the amounts of change you will get for purchases of $11.59, $17.50, $19.00, and $20.00. WITH THE TABLE

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?