There are an equal number of children in each group but each group must have the same number of children from each age range. What is the greatest number of groups that can be crated: How many children of each age range are represented in each group? If: Ages 6-10 (there are 18 children) Ages 11-14 (there are 12 children)

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)