Find the output, y, when the input, x, is -1

Which is the product of 58 and 1,000? a. 0.058 b. 5,800 c. 58,000 d. 580,000

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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?