Which comparison about the shapes is true? O There are 6 squares to 3 circles.
O There are 3 squares to 6 circles.
O There are 6 circles to 9 squares.
O There are 3 squares to 9 circles.

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)