A travel mug is cylindrical, and it's 2 1/2 in. width fits into most drink holders. what percent of the total durface are of mug is covered by 2 in. wide grip? use 3.14 for pi​

Whats the name of the vertical axis

Ill mark the brainliest if you me with the these three questions 7,8,9

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)