From a height of 3,000 feet, a falcon descends at a rate of 250 ft./sec. What is the rate of change in the falcon’s elevation, and what is the initial value

The rate of change in the falcon's elevation is the same as the rate at which it descends, which is 250 ft./sec.

The initial value, in this case, refers to the starting elevation. Since the falcon starts from a height of 3,000 feet, the initial value is 3,000 feet.