Final answer:
Dia's dad will need to use 9 ounces of chocolate syrup in total to make hot chocolate for three days, as he uses 3 ounces each day.
Step-by-step explanation:
To find out how many ounces of chocolate syrup Dia's dad should use to make hot chocolate for three days, we need to multiply the amount used each day by the number of days. The recipe calls for 3 ounces of chocolate syrup per cup of hot chocolate.
For three days, the calculation is as follows:
- 3 ounces/day × 3 days = 9 ounces in total
Therefore, Dia's dad will need 9 ounces of chocolate syrup to make hot chocolate for three days.