Answer:
i believe it's x2-7x=0
Step-by-step explanation:
Since you use 9 tablespoons per 21 cups, you need to first divide 168 by 21 and get 8. Then you will take 8 times 9 and get 72 tablespoons of milk.
1) 15.5 X 13.2 = 204.6
2) 204.6 ÷ 2 = 102.3
The answer is 102.3