What is the GCF (Greatest Common Factor) of 30x and 45x?

Which graph of a hyperbola represents the equation 16x^2-y^2=16

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.

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0). what are the directrices?