Final answer:
Mitch and Terry initially climbed 6.6 kilometers to reach a cliff then descended 1.3 kilometers. after realizing they left supplies behind they climbed back up 0.8 kilometers. now, they are 0.5 kilometers away from the scenic cliff.
Step-by-step explanation:
Determining the Distance from the Scenic Cliff: Mitch and his brother, Terry, went on a hiking expedition. Starting at sea level, they reached a cliff 6.6 kilometers high. After ascending to the top, they descended 1.3 kilometers. When Mitch realized he left essential supplies above, they decided to climb back up, covering 0.8 kilometers in the next hour. To calculate the distance they are now from the scenic cliff, we subtract the distance they climbed back up (0.8 kilometers) from the distance they had descended (1.3 kilometers).
So, the calculation would be 1.3 kilometers - 0.8 kilometers = 0.5 kilometers. Therefore, at this point, Mitch and Terry were 0.5 kilometers away from the scenic cliff.