To make a model volcano that actually erupts, Tomo mixes chemicals using the recipe shown. He makes three batches of fake lava, each containing a different amount. Drag numbers to show how much of each ingredient Tomo should use in each batch of fake lava

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)