Greatest common monomial factor of 15X³Y²-30XY

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d