Graph the solution set of the system of inequalities or indicate that the system has no solution. y ≥ 2x – 4 x + 2y ≤ 7 y ≥ -2 x ≤ 1

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Hi, can anyone show me how to do this problem? 100 points for this. in advance

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)