Translate the following inference to logic notation: For all x, if x drinks water, then x is a cashier. For all x, x will drink water if and only if x is a cashier. Therefore for all x, if x drinks water, then x is a cashier.
forall x: P(x) -> Q(x). forall x: P(x) <-> Q(x). Therefore forall x: P(x) -> Q(x).