Juan is rappelling down a 569-foot cliff. He moves down the cliff at a rate of 7 feet per second. Which equation would represent the height Juan is above the ground, H, after t seconds?
A. H = 569 - 7t
B. H = 569 + 7t
C. H = 7 - 569t
D. H = 7 + 569t

Question

Juan is rappelling down a 569-foot cliff. He moves down the cliff at a rate of 7 feet per second. Which equation would represent the height Juan is above the ground, H, after t seconds?
A. H = 569 - 7t
B. H = 569 + 7t
C. H = 7 - 569t
D. H = 7 + 569t

anonymous · Answer

If you are 569 feet up, that's your starting point.
And you descend at 7 ft/sec - a  negative value because your height is decreasing, right?

So you get H = 569 - 7t.

anonymous · Answer

Thank You! (-: