What is the area of the polygon in the figure below?
4 cm
12 cm
-11 cm

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

What is x and y intercepts for y=x+7

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)