(Im sure this is a easy answer but im just double checking)

Which algebraic rule describes the 180° counter-clockwise rotation about the origin?
A) (x, y) → (−x, y)
B) (x, y) → (x, −y)
C) (x, y) → (−x, −y)
D) (x, y) → (−y, −x)

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2