Unscramble these letters: BRASE. This is for a five digit code for my class, which is math.

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)

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.