NO. 20 Planting tulips. A bag of 30 tulips purchased from a nursery contain 12 red tulips, 10 yellow tump
bulbs, and 8 purple tulip bulbs.
a) What is the probability that two randomly selected tulip bulbs are both red?
b) What is the probability that the first bulb selected is red and the second is yellow?
c) What is the probability that the first bulb selected is yellow and the second is red?
d) What is the probability that one bulb is red and the other yellow?

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)