Find the average of the numbers 3, 5, 9, and 11.
The average of the numbers 3, 5, 9, and 11 is calculated by adding all the numbers and then dividing the sum by the total numbers. In this case, the sum of the numbers 3, 5, 9 and 11 is 28. We can then divide 28 by 4, which is the total number of terms, to get an average of 7. Hence, the average of the numbers 3, 5, 9, and 11 is 7.
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Find the average of the numbers 3, 5, 9, and 11.

### Response:
The average of the numbers 3, 5, 9, and 11 is calculated by adding all the numbers and then dividing the sum by the total numbers. In this case, the sum of the numbers 3, 5, 9 and 11 is 28. We can then divide 28 by 4, which is the total number of terms, to get an average of 7. Hence, the average of the numbers 3, 5, 9, and 11 is 7.