17X-7Y. You add or subtract the same variables, in this case you only have two x's and one y. So you add them, because you have a addition sign. 13x+4x and you leave the Y alone, because there is not another Y variable.
My guess would maybe be 12 !
Need to see the picture ..?
Answer:
B. experimental probability
Step-by-step explanation:
It wasn't A because the coin was flipped making it an experiment.
Option C is just wrong.
So that leaves you with option B as your answer.
Hope this helps.
18+ 13 gives you 31 so the difference between 13 and 31 is 18.
the answer is 31
