Find the original price. the discount is 30 percent and the sale price is 206.50 .

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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?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)