HELP PLEASE ASAP (no links scammers) WILL GIVE BRAINLEAST (again NO LINKS)

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)

Find the value of x. give reasons to justify your solutions! c ∈ ae

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?