Well it's hard to visually inspect this long text; let's look at it.

Based on visual inspection the averages look about the same.
Answer:
- 10.2n - 1
Step-by-step explanation:
You need to add the expressions:
- 2.4n - 3 + (- 7.8n +2)
- 2.4n - 3 - 7.8n + 2
- 10.2n -1
5x + 3

23
5x

20
x

4
So it can be {4, 8, 12}
If this helps, can you give me the brainliest answer? I need it...
Thank you very much.
Answer:
the answer to your question is this f(x) = x^2 - 11x + 2
Step-by-step explanation: