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The water acidity in a pool is considere...

The water acidity in a pool is considered normal when the average pH reading of three daily measurements is between ` 8.2 and 8.5` If the first two pH readings are `8.48 and 8.35`, then find the range of pH value for the third reading that will result in the acidity level being normal.

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To solve the problem, we need to find the range of the third pH reading (let's call it \( x \)) such that the average of the three readings falls between 8.2 and 8.5. ### Step-by-Step Solution: 1. **Identify the average condition**: The average pH reading of the three measurements must satisfy the inequality: \[ 8.2 < \frac{8.48 + 8.35 + x}{3} < 8.5 ...
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