Can you please help me with the step-by-step explanation for the following question?

Let's examine the history of LSUS undergraduate enrollment vs. its tuition and fees. Download the "A3Q1 LSUS enrollment data" Excel file; in it you will see historical information on LSUS undergraduate enrollment, total credit hour production, and (12-hour, undergraduate) tuition and fees. (If you wish, you can verify or look up additional information here, here, and here.)