Calculate the Average of the Number Sequence: 7, 9, 12, 8

To solve this problem, we'll follow these steps:

• Step 1: Add the numbers given.
• Step 2: Divide the sum by the number of terms.
• Step 3: Verify the result against the given answer choices.

Let's work through each step:

Step 1: The problem provides the numbers $7, 9, 12,$ and $8$.
Calculate the sum: $7 + 9 + 12 + 8 = 36$.

Step 2: There are four numbers. To find the average, divide the sum by the count of numbers:
$\text{Average} = \frac{36}{4} = 9$.

Therefore, the average of the numbers $7, 9, 12, 8$ is $9$.