Rachel has 20 marbles in a jar. this table shows the number of blue, black, red, orange, and green marbles. what is the probability that if she randomly drew a marble out of the jar it would be orange? a) 1 5 b) 1 4 c) 2 5 d) 1 3

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)