Answer:
Change in elevation= 431 feet/mile marker
Explanation:
given data
Elevation at mile marker 4 = 6135 feet
Elevation at mile marker9 = 8290 feet
to find out
average change in elevation
solution
we get here average change in feet per mile marker that is express as
average change in feet per mile = change in elevation ÷ change in mile marker .....................1
put hree value we get
average change in feet per mile =
average change in feet per mile = 431 feet/mile marker
so
Change in elevation= 431 feet/mile marker