Rocky has 7 bottles of water. he will buy more bottles of water from the store. the store has 8 cases in stock and each case contains 24 bottles of water. the store will not sell partial cases. the function that models the number of bottles of water rocky will have after his purchase is f(c)=24c+7, where c is the number of cases of water he buys. what is the practical domain of the function? a) {1, 2, 3, 4, 5, 6, 7, 8} b) all real numbers from 1 to 8, inclusive c) all real numbers d) {31, 55, 79, 103, 127, 151, 175, 19 9}