Mathematics

Beau

3 January, 05:53

Problem:

The altitude of an airplane descending to an airport is represented by the equation shown below, where y represents the altitude, in feet, of the airplane and x represents the number of minutes since landing began.

y = - 125x + 40,000

Part A:

What is the altitude of the airplane after 5 minutes? after 30 minutes? Show your work then write your answers as ordered pairs (x, y).

Part B:

Create a table for the values when x = 0, 5, 8, 10, 30.

Part C:

Which ordered pair (from the table in part B) represents the initial value? What does the initial value represent in this problem? (1-2 sentences)

Part D:

What is the rate of change in this equation? What does the rate of change represent in this problem? (1-2 sentences)