11) Yolanda collects trading cards, and she has started her younger brothers, Xavier and Zach, collecting cards as well.
As of today, Zach owns 5 more cards than Xavier, and Yolanda owns twice as many cards as Xavier and Zach combined.
Which of the equations expresses the number of cards Yolanda owns, y, in terms of the number of cards Zach and Xavier
own, x?
