Which Is the Net for the Figure Shown?

X+ y = 5 ; x - y =3 solve using linear combination

Pranza plotted point a in the coordinate plane below.

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?