Question

an airplane descended 4,000 before landing. what is the integer that represents how many feet the airplane was above the ground before descent ?

Answer 1

Since, an airplane descended 4,000 before landing.

We have to determine the integer that represents the number of  feet the airplane was above the ground before descent.

Since, an airplane descended 4,000 before landing. So, before descent the airplane was at the height of 4,000 feet above the ground.

Since, the distance above the ground is represented by the positive integer.

Therefore,the airplane was +4,000 feet above the ground before descent.