Question

4) A hiker descended 320 feet in 40 minutes, then ascended 10 feet per minute for the next 25 minutes.Find the hiker's overall change in elevation

Answer 1

Let's draw this situation

We can add the distances as follows,

`d_(final)=-320+10*25`

thus,

`d_(final)=-320+250=-70`

We can see that the hiker's overall change in elevation was -70 feet, which means that he descended 70 feet from the original position.