125 inches is equal to 10 feet and 5 inches because 12 inches are in each foot. To find how many feet, you would do 125/12 which is 10 and a remainder of five. This means that 125 inches is equal to 10feet and 5 inches.
I would have to say that the next step would be to add the x so that way you are able to have your number on one side and your x variable on the other.
3rd option,hope that helps
The answer is most likely to be B
13²
because this is exponet