Answer:
- A-B=7x-3x+10-4x²-66+4
- 4x-52-4x²
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I think It is 2. it makes the most sense to me
The mass of the apple juice needed to increase the initial concentration to 25% is 45 kg
The given parameters;
- <em>Mass of the apple juice, m = 30 kg</em>
- <em>current percentage, = 10%</em>
- <em>final percent after increment = 25%</em>
Let the mass added to increase the percentage to 30% = x
10% ----------------- 30 kg
25% ------------------ ?

The additional mass is calculated as;

Thus, the mass of the apple juice needed to increase the initial concentration to 25% is 45 kg.
Learn more about percentage and ratio here: brainly.com/question/11752721
Answer:
21x + 12
Step-by-step explanation:
correct me of i am wrong
Answer:
Missing Number: 70,000,000