Final answer:
Jerome's sister told him to multiply both the amount of water and the amount of drink mix by the same number to keep the ratio of water to drink mix the same and increase the total amount of energy drink.
Step-by-step explanation:
To keep the ratio of water to drink mix the same and still increase the total amount of energy drink, Jerome's sister told him to multiply both the amount of water and the amount of drink mix by the same number. To complete the table, let's multiply the original amounts of water and drink mix by different numbers:
Original Ratio x1 x2 x3 x4
Drink mix (cups) 3 3 3 × 2 = 6 3 × 3 = 9 3 × 4 = 12
Water (cups) 8 8 8 × 2 = 16 8 × 3 = 24 8 × 4 = 32