Nine to the fifth power is nine multiplied by nine five times so D. is the answer.
2 and 4/5 is 14/5 as a mixed number.
Add 720 degrees (which represents two full revolutions around the center) to -800. Result: -80 degrees. This angle is in Quadrant IV.
Subtracting 80 from 360 will give you a positive angle co-terminal with -800 deg. 360 - 80 = ?