Interval notation is a method used to express a range of numbers between two specific points. This method employs brackets and parentheses to signify if the endpoints are incorporated or excluded. The square brackets [ ] mean the endpoint is included, whereas parentheses ( ) indicate it's excluded. For example, the range [3, 8) includes 3 but does not include 8.
| Topic | Problem | Solution |
|---|---|---|
| None | Translate and solve: 72 greater than $\mathrm{r}$… | Translate and solve: 72 greater than r is less than -432. This can be written as 72 + r < -432. |
| None | Graph the inequality and give interval notation f… | Solve the compound inequality: \(-8x + 3 > -5\) OR \(-2x - 4 \leq -12\). |
| None | A number \( b \) is at most 18 . | \(b \leq 18\) |