Final answer:
The slope of the rapids is found by dividing the vertical drop of 62 feet by the horizontal distance of 920 feet, resulting in approximately 0.067.
Step-by-step explanation:
The question is asking us to calculate the slope of the rapids given a vertical drop and a horizontal distance. The slope of a line is defined as the rise over the run. In this case, the vertical drop (rise) is 62 feet, and the horizontal distance (run) is 920 feet.
So, the slope (m) of the rapids is calculated as:
m = rise/run = 62 ft./920 ft. = 0.0674 (rounded to four decimal places)
Since the slope is usually given in its simplest form, the answer of 0.0674 can be approximated to 0.067. Therefore, the correct answer is C. 0.067.