What does restriction b in illinois license mean?

If eh = hg and hg=16, find the diameter of k

In the 30-60-90 triangle below side s has a length of and side r has a length

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?