Kelly has 11 markers in a backpack. one of them is pink and one is blue. find the probability kelly will reach into the backpack without looking and grab the pink marker and then reach in a second time and grab the blue marker. express your answer as a fraction in simplest form.

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)