Translate the following inference to logic notation: For all x, if x_8 plays tennis, then x_8 is playing squash. For all x, x_8 will play tennis if and only if x_8 will work. For all x, x_8 will not play squash. Therefore for all x, x_8 will not work.
forall x: P(x) -> Q(x). forall x: P(x) <-> R(x). forall x: ~Q(x). Therefore forall x: ~R(x).