| Clue | Source | Date |
|---|---|---|
| Ninth grade math course, often | ||
| Ninth grade math course, often | LA Times Daily | 26 Nov 2023 |
| Ninth grade course, often | Wall Street Journal | 13 Aug 2022 |
| Ninth grade math, often | Wall Street Journal | 17 Aug 2019 |
| Ninth grade math, often | ||
| Basic math course | ||
| Basic math course | ||
| It often features the quadratic formula |