Final answer:
The incremental cost per ounce of the larger size soda is 1.25 cents.
Step-by-step explanation:
To calculate the incremental cost per ounce of the larger size soda, we use the formula: incremental cost = (price of larger size - price of smaller size) / (size of larger size - size of smaller size). In this case, the price of the 24 oz soda is $0.99 and the price of the 16 oz soda is $0.89. The size difference is 24 - 16 = 8 oz. Plugging these values into the formula, we get: incremental cost = (0.99 - 0.89) / 8 = 0.1 / 8 = 0.0125 = 1.25 cents per ounce.