Felix and bea are cutting the grass. felix has cut 2/5 and bea has cut 3/8 how much of the grass are left to cut?

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?