Does the set of numbers 13 21 and 24 form a Pythagorean triple explain​

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?

It says factor each expression 49x-28?

Which table shows a proportional relationship between miles traveled and gas used?