PLEASE HELP A BROTHER OUT!! WILL GIVE BRAIN

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?