Which type of data would be best displayed in a dot plot? A. the number of miles the dental clinic bus travelled each month for the last 60
months (range: 700-1875)
B. the number of dentists volunteering their
time in each of the last 15 school dental
clinics (range: 3-28)
C. the number of students seen in a school
clinic that did not have any cavities
D. the number of toothbrushes distributed
each month for the last 24 months
(range: 725-2450)

Hey can some one please help

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)