Duncan told his friend Tran that when you multiply any number by 10%, you can just write two zeros after the last digit of the number. He gives the example: 4x100 - 400 to prove this is always true. Tran disagrees and gives his example: 04 x 10' to prove that Duncan's rule is not always true. Who is correct
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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?

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done

Will give a: 122 b: 90 c: 48 d: 180