John is digging a rectangular hole. The area of the rectangle is 8 square feet. John digs 4 feet down into the ground. What's the volume of John's hole in cubic feet?

Can any one me with the answers to these questions asap?

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?

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?