Based on this flyer, what can you conclude about settlement houses? A. They were popular among immigrants. B. they were places where people could learn English. C. they were important in the Progressive movement. D. they were concerned with children's well-being. help quickly I need an answer by today!

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)