How to do this? and how to calculate it as well?

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?

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?