noah assigns a number to each of the 150 athletes at his school and puts a number in a box. he randomly chooses 30 numbers in find out 18 of the astronauts wife television last night. use the sample to make it in french about how many athletes watch television last night

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)