Question 4 of 10 The graph shows the function fx) = 3%
What is the value of x when fx) = 9?
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Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great

What is the solution to the system of equations? y=1.5-3 y=-x

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?