What was theThere was a pie-eating contest at the county fair. The 10 contestants were given 2 minutes to eat as many pieces of a pie as they could. The line plot below shows the fraction of a pie each of them ate. PLEASE ANSWER I NEED AN 100

What's the total amount of pie eaten?

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)