Help pls I ummm.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal