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For the correct answers to all three questions

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?

Given abcd ac=38 and ae=3x+4 find the value of x

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?