Answer:
None of the above.
Step-by-step explanation:
n(3 + 2n)
Apply distributive property...
3n + 2n²
There are no extra numbers
Answer: 6
Step-by-step explanation: look it up
Answer:
a = ±10/9
Step-by-step explanation:

Answer:
$150.
Step-by-step explanation:
You would add to get the answer.
57 + 90 = 150.
Feel free to let me know if you need more help. :)