Ben is rock climbing in the Grand Canyon. He starts off 59.3 feet above sea level and descends into the canyon. The difference between his starting and ending elevation is 129.6 feet. What is Ben's final elevation?

-70.3 feet

Step-by-step explanation:

Let Ben's final elevation be represented by x.

We are informed that he starts off 59.3feet above sea level and descends into the canyon and that the difference between his starting and ending elevation is 129.6 feet. This will then be expressed in an equation as:

59.3 - x = 129.6

x = 59.3 - 129.6

x = -70.3

Therefore, the final elevation is -70.3 feet.

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step-by-step explanation: