You can buy 5 cans for green beans at the vilage market for $2.80 .you can buy 10 of the same cans of beans at sam club for $7.50.which place is the better buy?

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.