independent quantity is time in days and dependent quantity is volume of water in billion gallons is the one among the following that is the most appropriate unit to describe the rate at which water flows over Niagara Falls. The correct option among all the options that are given in the question is the third option or option "C".
you have to multiply .79 to both a and 1.2. A is wrong because it's saying we need to multiply .79 to 1.2lb. which is the weight of oranges and the total cost of apples and oranges which is 6.27.
