Eight times the difference of a number and eleven is equal to the same number increased by 3.

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?

Which of the following is the result of expanding the series

Ithink i know it but i want to be sure so can you me out ?