Answer:
Step-by-step explanation:
The first step will always be to break it down into steps.
Nathan lifted 13 boxes, each weighing 12 lb more than Steven's boxes. Steven lifted 15.
The total weight of Nathan's boxes would be the weight of 1 box times 13, because he lifts a total of 13 boxes.
S is the weight of Steven's boxes.
Steven's box + 12 lb = the weight of one of Nathan's boxes.
Then, you would multiply that number by 13 to get your answer.
Therefore, the first option is correct.
13(s + 12)
number of boxes Nathan lifted(Steven's weight + the extra pounds)
Hope this helped!
