2.5 For the following numerical variables, state whether each is discrete or continuous. a. The length of a 1-year-old rattlesnake b. The altitude of a location in California selected randomly by throwing a dart at a map of the state c. The distance from the left edge at which a 12-inch plastic ruler snaps when bent far enough to break d. The price per gallon paid by the next customer to buy gas at a particular station