Which option best describes the transformation graphed below?

a
180 degree counter-clockwise rotation

b
reflection across the y-axis

c
reflection across the line y=-x

d
translation 7 units to the right and 4 units up

e
translation 7 units to the left and 4 units down

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)