Based on the image you uploaded, the task involves converting between interval notation and inequality notation. Let's walk through how to answer the questions.

1. Part a asks you to enter the interval [3, ∞) in interval notation:

   • You can simply type it as [3, ∞).

2. Part b asks you to enter the inequality 2 < x ≤ 7 in interval notation:

   • Since 2 < x ≤ 7, the interval notation is (2, 7].

If you have further questions or would like more examples or clarifications, let me know!

Here are 5 related questions:

1. How would you write the inequality $-2 \leq x < 5$ in interval notation?
2. What is the inequality notation for the interval $(-\infty, 4)$?
3. Convert the interval $[1, 6]$ to inequality notation.
4. How do you represent $x \geq -3$ in interval notation?
5. What does the interval $(-\infty, \infty)$ represent in inequality notation?

Tip:

Remember that round brackets $($ and $)$ are used for strict inequalities, while square brackets $[$ and $)]$ are used for "or equal to" inequalities.