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Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

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?

What numbers are included in the set of integers? what numbers are not included?