What is the slope of the function, represented by the table of values below? (-2,10) (0-6) (3,0) (5,-4) (8,-10)

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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?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?