Need . i been stuck at these problems

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?

This is so hard and it’s for a test

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?