Heather and joel are going on a camping trip and are trying to determine how much water to buy and bring with them. a. they decide to record how much water they drink in one day. what is the appropriate unit of measure to use? b. say that they each drink eight 8 ounce glasses of water a day. if they are going to be gone for four days, how many gallons of water should they buy? c. they bought 4.5 gallons of water and left it on the picnic table while they went on a hike. the raccoons busted in and drank 7 quarts of water on the first day.