Final answer:
To raise your GPA according to the given formula, you should attend classes regularly and allocate more hours to studying, as these factors contribute significantly to your GPA calculation.
Step-by-step explanation:
The question relates to understanding how different factors influence your GPA, according to a given formula. It highlights that your GPA is based on a combination of your combined SAT score, class attendance, and the hours spent studying. To improve your GPA, since SAT scores are already set post-admission, you should focus on not skipping classes and increasing your study time, as the latter has a more significant impact on your GPA calculation.