F(x)< 0 over (-[infinity], -3) and what other interval?

(-2.4. - 1.1)

(-3, - 1.1)

(-1.1, 2)

(-1.1,0.9)

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).