Translate the following inference to logic notation: There is at least one x for which x_9 is not a musician. For all x, x_9 is a cashier or x_9 will drive a car. For all x, if x_9 were a cashier, then x_9 is a musician. For all x, if x_9 were a musician, then x_9 is a cashier. Therefore there is at least one x for which x_9 will drive a car.
exists x: ~P(x). forall x: Q(x) or R(x). forall x: Q(x) -> P(x). forall x: P(x) -> Q(x). Therefore exists x: R(x).