Final answer:
Jordan's overall change in elevation is a descent of 60 feet, calculated by multiplying the number of stops, which is 4, by the distance descended each stop, which is 15 feet.
Step-by-step explanation:
Jordan is scuba diving and stops each time she descends 15 feet to take a photo. She does this four times, starting at the surface level. To calculate her overall change in elevation, we multiply the number of stops by the depth per stop. Therefore, the calculation is 4 stops × 15 feet per stop.
Overall change in elevation = 4 × 15 feet = 60 feet.
Jordan's overall change in elevation is a descent of 60 feet below the surface level.