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Question
An airplane is starting its descent to prepare for landing. The table shows the linear relationship between the number of minutes of descent and the altitude of the plane.



Plane's Altitude

Time (minutes), x Altitude (feet), y
5 40,000
10 30,000
15 20,000
20 10,000
25 0

Which statement is true?
Responses
A The plane was descending at 2,000 feet per minute.The plane was descending at 2,000 feet per minute.
B The plane’s starting altitude was 40,000 feet.The plane’s starting altitude was 40,000 feet.
C The plane’s starting altitude was 45,000 feet. The plane’s starting altitude was 45,000 feet.
D The plane was descending at 25 feet per minute.

Answer 1

The correct statement is:

A. The plane was descending at 2,000 feet per minute.