Question

A group of hikers is descending at a rate of -648 feet per hour. What is the change in their elevation after 7 hours?

a. They descend 4,536 feet.
b. They ascend 4,536 feet.
c. They descend 6,048 feet.
d. They ascend 6,048 feet.

Answer 1

The hikers descend at a rate of -648 feet per hour. After 7 hours, they have descended a total of 4,536 feet. The correct answer is option (a) They descend 4,536 feet.

Step-by-step explanation:

The question asks about the change in elevation for a group of hikers descending at a rate of -648 feet per hour over a period of 7 hours. To find the total change in elevation, we multiply the rate of descent by the number of hours:

-648 feet/hour × 7 hours = -4,536 feet

Since the rate of descent is given as a negative number, this indicates a decrease in elevation. Therefore, after 7 hours, the hikers have descended a total of 4,536 feet.

The correct answer to the question is (a) They descend 4,536 feet.