75 pointss math.

Every time you drive you will experience a combination of driving conditions and environments.

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?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?