A high-school band has d drummers and 10 violinists. There are 2 more violinists than drummers. Which of the following equations represents the situation? A- d = 10 + 2 B d = 10 - 2 C- d = 2 - 10 D d = 2 - 10

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)