Jump from a plane 13000 feet above sea level landing in a valley at 120 feet below sea level. open shoot after falling 10500 feet from the plane. how much farther will she fall in feet to reach the valley floor

The total distance between the valley and plane is equal to:
13000-(-120)
13000+120
=14200

To find out how much further to fall subtract the height at which the parachute was opened from the total height...
14200-10500
=3700 feet

She will need to fall another 3700 feet to reach the valley floor.

Hope this helps!
-Benjamin

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)