Will mark brainliest for the **CORRECT** answer!

How do you find the area of a triangle

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?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?