The Environmental Protection Agency says on its website that "You can save up to 8 gallons of water by turning off the faucet when you brush your teeth in the morning and before bedtime." a. Estimate how much water a family of four would use each week, assuming they left the water running while brushing.
b. Estimate how much water would be saved in one day if the entire United States turned off the faucet
while brushing.
c. Put your answer to the previous question in context (compare it to the volume of water in a lake or swimming pool, for example).