the student council is having a dinner fund-raiser. the cost to rent the banqet is 135. the cost per plate is $5. if the tickets to the dinner banquet are 12$ per person, how many people must attend in order for the school to make a profit?

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?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.