Need answers to three questions in picture will give

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?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog