One root of f(x)=x3-4x2-20x+48 is x=6. what are all the factors of the function? use the remainder theorem.

Im literally having a mental breakdown

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)

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex