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Math·Algebra·Linear functions

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An airplane begins its descent from a cruising altitude of $33,000$ feet and descends at a constant rate of $1,800$ feet per minute. Which of the following statements best describes how the plane’s distance from its cruising altitude changes over time?

A

The plane’s distance from its cruising altitude is increasing linearly over time.

B

The plane’s distance from its cruising altitude is decreasing linearly over time.

C

The plane’s distance from its cruising altitude is increasing exponentially over time.

D

The plane’s distance from its cruising altitude is decreasing exponentially over time.