Final answer:
The difference between the town's elevation of 450 feet above sea level and the lake's elevation of 25 feet below sea level is 475 feet. This is calculated by adding the town's elevation to the positive equivalent of the lake's negative elevation.
Step-by-step explanation:
To find the difference in elevation between the town and the lake, you subtract the elevation of the lake from the elevation of the town. Since elevation above sea level is considered positive and below sea level is negative, the town is at +450 feet and the lake is at -25 feet.
The calculation is as follows:
- Take the town's elevation: 450 feet.
- Subtract the negative elevation of the lake: +25 feet (because subtracting a negative is like adding a positive).
- The result is the difference in elevation: 450 feet + 25 feet = 475 feet.
Therefore, the difference in elevation between the town and the lake is 475 feet.