Answer :
Final answer:
The integer that describes the student's change in elevation after going from 1500 feet to 1200 feet is -300, indicating a descent or decrease in altitude.
Explanation:
The student began hiking at an elevation of 1500 feet and later found herself at an elevation of 1200 feet. To find how much her elevation changed, we can subtract her final elevation from her initial elevation. This gives us: 1500 - 1200 = 300. However, since she went from a higher elevation to a lower one, we know that she moved down, or decreased her elevation. Therefore, her change in elevation is -300. So, the integer that describes her change in elevation is -300.
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