SOMEONE PLS HELP!! math journal 3 Assigned: 4/12/2021 | Due: 4/
16/2021 Geometry 1 Proof-writing:
Write two proofs from the problem sets and then write a narrative about the process of completing each proof. In other words, write a reflection on how to solve a problem involving proofs.​

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)