A garden store sells potted plants and shrubs.
Each potted plant costs $4.75, and each shrub costs $14.50.
On one day, the garden store sells at least 80 potted plants and at most 25 shrubs for a
total sale of at least $700.
If x represents the number of potted plants, and y represents the number of shrubs, which
system of inequalities represents this situation?

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)