Which statement best describes the function below? f(x) = 2x^3 + 2x^2 –x
O A. It is a one-to-one function.
O B. It is a many-to-one function.
O c. It is not a function.
OD. It fails the vertical line test.

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

How can you tell when x and y are not directly proportional?

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2