A 12 pack of ice-cream sandwiches cost $7.20 and a 9 pack of ice-cream sandwiches costs $4.50. Which package of ice-cream sandwiches is the better buy?

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?

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?