Can anyone help with this lol-?
The figure shown is composed of two regular pentagons. What is the area of the shaded region?

A.
2 square meters

B.
197.25 square meters

C.
198.9 square meters

D.
492.75 square meters

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)