¿Cuál de las funciones presentadas a continuación tiene como raíces x 1 = -1 y x 2 = -0,25?
A) y= -2x 2 +1 B) y= -1x 2 -0,25x
C) y= 4x 2 +5x +1 D) y= x 2 +4x +5

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?