HELP ME PLZ IM SO STRESSED UGH IM CHOOSING BRAINLEST ONLY IF U GET IT RIGHT

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?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?