Suppose C(x) represents the cost in dollars of delivering an order of sand as a function of weight in pounds. C(18) = 56 means The cost of delivering 18 pounds of sand will be 56 dollars The cost of delivering sand times 18 will be 56 dollars The cost of delivering 56 pounds of sand will be 18 dollars C(0) = 13 means The cost of delivering 0 pounds of sand will be 13 dollars The cost of delivering sand times 0 will be 13 dollars The cost of delivering 13 pounds of sand will be 0 dollars Suppose you can afford to spend 230 dollars on sand. Which equation should you solve to determine how much sand you can purchase? OC(230) = x OC(x) = 0 OC(x) = 230 OC(0) = x > Next