Kaylee solves the equation below by first squaring both sides of the equation. 1-y=sqrt (2y^2-7) What extraneous solution does Kaylee obtain? y=? Thanks!

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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?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.