Final answer:
To raise your GPA based on the given model, you should focus on not skipping classes and increasing your study time as study hours have double the impact on your GPA than class attendance or SAT scores.
Step-by-step explanation:
The relationship between your GPA, combined SAT score, class attendance, and study hours is meaningful. To improve your GPA, focusing on the variables you can control is key. Since your SAT score is already set, concentrating on class attendance and especially hours spent studying can make the most difference. In fact, studying has twice the weight of either of the other factors in determining your GPA according to the given formula.
Strategies to raise your GPA would be to not miss classes and invest significant effort into studying, with latter being more impactful. Since economic models use similar formulations to express relationships between economic terms, this understanding of variable weight can be useful beyond education into fields like business or economics.