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22 December, 16:20

The expression 2x + 50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. What is the rock climber's initial height above sea level?

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  1. 22 December, 17:15
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    We let y equal to the elevation above sea level so that the elevation of the rock climber after x minutes of climbing would be:

    y = 2x + 50

    His initial height can be calculated when x is equal to zero it is when the climber is not yet climbing. Therefore, the rock climber'sinitial height above sea level would be 50 meters.
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