roblems, the terms mean and average refer to the arithmetic mean, unless otherwise stated. Simone's average score for seven tests is 82 points. If she scores 90 points on her eighth est, what is the average of all eight test scores?

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To determine Simone's new average after her eighth test, follow these steps:

1. **Calculate the total score for the first seven tests:**
   
   $$
   \text{Total for 7 tests} = 7 \times 82 = 574 \text{ points}
   $$

2. **Add the score of the eighth test:**
   
   $$
   \text{New total} = 574 + 90 = 664 \text{ points}
   $$

3. **Compute the new average for all eight tests:**
   
   $$
   \text{New average} = \frac{664}{8} = 83 \text{ points}
   $$

**Answer:** The average of all eight test scores is 83 points.
Simone's new average after the eighth test is 83 points.

roblems, the terms mean and average refer to the arithmetic mean, unless otherwise stated. Simone's average score for seven tests is 82 points. If she scores 90 points on her eighth est, what is the average of all eight test scores?

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