While hiking, Ellie started at 400 feet below sea level. She ended at a higher elevation than she started. Select all the values that could represent the elevation Ellie ended her... While hiking, Ellie started at 400 feet below sea level. She ended at a higher elevation than she started. Select all the values that could represent the elevation Ellie ended her hike at.
Understand the Problem
The question describes a scenario where Ellie starts hiking at an elevation of -400 feet (below sea level) and ends at a higher elevation. The task is to identify which of the provided values could represent her final elevation, meaning values greater than -400.
Answer
The final elevation must be $ > -400$ feet.
Answer for screen readers
The final elevation must be greater than $-400$ feet.
Steps to Solve
- Understand the starting elevation
Ellie starts at an elevation of $-400$ feet.
- Determine the condition for the final elevation
The final elevation must be greater than the starting elevation. This means the final elevation $ > -400$ feet.
- Evaluate each option
Check each provided value to see if it's greater than $-400$.
The final elevation must be greater than $-400$ feet.
More Information
Elevations below sea level are represented by negative numbers. The closer a negative number is to zero, the higher the elevation. For example, $-100$ feet is a higher elevation than $-300$ feet. Any positive number is greater than any negative number.
Tips
A common mistake is to think that a larger negative number represents a higher elevation. For example, $-500$ is less than $-100$, so an elevation of $-500$ feet is lower than an elevation of $-100$ feet.
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