Translate the following inference to logic notation: For all x, x_10 is a cashier if and only if x_10 will drive a car. For all x, x_10 is a cashier if and only if x_10 will drive a car. Therefore if Karen drives a car, then Karen is a cashier.
forall x: P(x) <-> Q(x). forall x: P(x) <-> Q(x). Therefore Q(a) -> P(a).