The answer is A. 6x^2 hope this helps!
Answer:
10x+23 (pretty sure) and the * means multiply
Step-by-step explanation:

One battery costs $1.44.
The unit rate would be

To get that answer, you would have to divide 13 ÷ 9.
I'm not sure if this is what you were looking for, but if it was, I hope I helped! :-)