During a promotional weekend, a state fair gives free admission to every 155th person that enters the fair. on saturday, there were 5,516 people attending the fair. on sunday, there were 6,399 people there. how many people received a free admission over the two days?

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)