Final answer:
By multiplying the distance climbed down per attempt (51 feet) by the number of times the climber did so (2), we determine the total elevation change to be 102 feet.
Step-by-step explanation:
The mountain climber climbed down a cliff 51 feet at a time. This was done 2 times in one day. To find the overall change in elevation, we can multiply the height he climbed down in one attempt by the number of times he did so:
- Change in elevation for one attempt = 51 feet
- Number of attempts = 2
Total change in elevation = 51 feet × 2 = 102 feet
Therefore, the overall change in the mountain climber's elevation after climbing down the cliff two times in one day is 102 feet.