Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?
Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 β 196 is a difference of squares: (y + 14)2 is a difference of squares: (y β 14)2 is a difference of squares: (y + 14)(y β 14) is not a difference of squares