What is the value of the x variable in the solution to the following system of equations? 4x + 2y = 12 x − y = 3 a: 0 b: -3 c: 3 d: 2

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?