Consider the following premises. It is sunny. It is not snowing. If Thomas were happy, then Jessica is driving a car. It is snowing if and only if Jessica is driving a car. Can we infer the following from them? If we can, name the inference rule being used: Thomas is not happy and it is sunny.
 From the fact that it is snowing if and only if Jessica is driving a car, and that it is not snowing we can infer that Jessica is not driving a car via biconditional elimination. From the fact that if Thomas were happy, then Jessica is driving a car, and that Jessica is not driving a car we can infer that Thomas is not happy via modus tollens. Finally, from the fact that Thomas is not happy, and that it is sunny we can infer that Thomas is not happy and it is sunny via conjunction. Therefore, the answer is yes.