Final answer:
It is not possible to determine the quantity of slush flavor without more specific information.
Step-by-step explanation:
The question asks how much slush flavor goes into a RT44 oz cup. To answer this, we need to look at the information provided. The information lists the quantities of different ingredients for a milkshake, including whipped cream, sherbet, and yogurt. However, it does not specifically mention the quantity of slush flavor.
Therefore, without more specific information, it is not possible to determine exactly how much slush flavor goes into a RT44 oz cup.