Can someone PLEASE find these angles??

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?

The blue segment below is a diameter of o. what is the length of the radius of the circle?