Write 2.71¯¯¯ as a simplified fraction. enter your answer as a simplified improper fraction by using the / symbol, like this: 42/53
get to me in less then 30 minutes
Also I tried 37/100 and I got it wrong

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)