Which expression is a quadratic binomial?

a. x^2-9x
b. 7x^2
c. 2x^4+9x^2-6x-1
d. 3x^4-2^x

Pentagon abcde is dilated according to the rule do,3(x,y) to create the image pentagon a'b'c'd'e', which is shown on the graph. what are the coordinates of point a of the pre-image? a) (-1, 1)b) (-1, 2)c) (-9, 6)d) (-9, 18)