Question

A helicopter is flying at an altitude of 7,000 feet when it begins descending towards a landing pad on top of a 500-foot building. The descent takes 10 minutes. The function A(t) represents the altitude of the helicopter, in feet, t minutes into its descent.
What is the range of A(t)?
Real or Whole numbers

Answer 1

At t = 0 the altitude is 7000 ft and at t = 10 it is 500 ft. During the descent the helicopter attains every altitude between those values, so the range is the closed interval [500, 7000]. These are real numbers (not just whole numbers).