Prime factorization of 891

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

In which quadrant does the point lie? write the coordinates of the point. a. quadrant ii; (–2, –4) b. quadrant iii; (2, 4) c. quadrant iii; (–2, –4) d. quadrant iv; (–4, –2)

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i