Help and I will give

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?

With alll of except for the 2 that i did already

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14