Question: what are the possible rational zeros of f(x) = x^4 + 2x^3 − 3x^2 − 4x + 20? choices: 1, 2, 4, 5, 10, 20 ą 1, ą 2, ą 3, ą 4, ą 5, ą 6, ą 7, ą 8, ą 9, ą 10, ą 11, ą 12, ą 13, ą 14, ą 15, ą 16, ą 17, ą18, ą 19, ą 20 ą 1, ą 2, ą 4, ą 5, ą 10, ą 20 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Captain umaima has a ship, the h.m.s. khan. the ship is two furlongs from the dread pirate nadia and her merciless band of thieves. the captain has probability 3/7 of hitting the pirate ship. the pirate only has one good eye, so she hits the captain's ship with probability 2/5. if both fire their cannons at the same time, what is the probability that the captain hits the pirate ship, but the pirate misses.