Is the polynomial a difference of squares and if it is factor the polynomial?
y^2-16
a) is not a difference of squares
b) is a difference of squares: (y-8) (y+8)
c) is a difference of squares: (y-4)^2
d) is a difference of squares: (y-4) (y+4)

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120