Translate the following inference to logic notation: For all x, x_10 will play tennis if and only if x_10 is an astronaut. For all x, x_10 is an astronaut. For all x, if x_10 were a server, then x_10 is playing tennis. Therefore for all x, x_10 will play tennis or x_10 will work.
forall x: P(x) <-> Q(x). forall x: Q(x). forall x: R(x) -> P(x). Therefore forall x: P(x) or S(x).