Gina is buying juice, she needs 30 servings. at the store she can get 30 individual boxes for $21.99, or she can get 1/2 gallon cartons of juice. each carton is $3.99 and contains 5 servings. which is better to for gina to buy?

7friends share 4 pizzas equally how much pizza did each friend get

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation.

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?