The image you've shared contains a sequence of numbers: 88, 73, 58, followed by an empty box.

This looks like a number pattern or arithmetic sequence where the next number in the series needs to be determined. Let's analyze the difference between the numbers:

• $88 - 73 = 15$
• $73 - 58 = 15$

The difference between consecutive terms is a constant 15, indicating that this is an arithmetic sequence with a common difference of $-15$.

To find the next number:

• $58 - 15 = 43$

Thus, the next number in the sequence should be 43.

Do you have any other details you'd like me to explain?

Here are some related questions to consider:

1. What is the general formula for an arithmetic sequence?
2. How can we find any term in an arithmetic sequence?
3. What is the sum of the first $n$ terms in an arithmetic sequence?
4. How does the common difference affect the rate of change in the sequence?
5. Can we create a similar sequence with a different common difference?

Tip: In arithmetic sequences, knowing the common difference makes it easy to predict future or missing terms!