What is 100,000 times 90

Which expression gives the area of the triangle shown below

Describe what moves you could use to create the transformation of the original image shown at right

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?