Questions: 4) At the end of a runner's half marathon, they ended up 510 feet above sea level. What was their change in elevation if the start was -320 feet below sea level?

Solution Steps

To find the change in elevation, we need to calculate the difference between the final elevation and the starting elevation. The starting elevation is given as -320 feet (below sea level), and the final elevation is 510 feet (above sea level). The change in elevation is the final elevation minus the starting elevation.

The starting elevation is given as \( -320 \) feet (below sea level), and the ending elevation is \( 510 \) feet (above sea level).

To find the change in elevation, we use the formula: \[ \text{Change in Elevation} = \text{Ending Elevation} - \text{Starting Elevation} \] Substituting the values: \[ \text{Change in Elevation} = 510 - (-320) = 510 + 320 = 830 \]

Final Answer