Test the validity of the arguments.

1. If the salaries go up, then more people apply. More people apply or the salaries go up. Therefore, the salaries go up.

2. If Rita studies, she gets good grades. Rita gets bad grades. Therefore, Rita does not study.

3. The balloon is yellow or the ribbon is pink. If the balloon is filled with helium, then the balloon is a green one. The balloon is filled with helium. Therefore, the ribbon is pink.

4. If the job offer is for at least $30,000 or has 5 weeks vacation, I will accept the position. If the offer is for less than $30,000, then I will not accept the job and I will owe rent money. I will not accept the job. Therefore, I will owe rent?