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The altitude of a plane as it begins to descend is shown by the linear equation
a = 28,500 – 1800m, where a is the plane’s altitude, in feet, and m is minutes.

What is the plane’s altitude when m = 9?

Question

HELP ME ? I WILL GIVE YOU A MEDAL & FAN

The altitude of a plane as it begins to descend is shown by the linear equation 
a = 28,500 – 1800m, where a is the plane’s altitude, in feet, and m is minutes.
 
What is the plane’s altitude when m = 9?

anonymous · Answer

12,300

anonymous · Answer

A=28500-(1800x9)
Multiply 1800 by 9
A=28500-16200
Subtract
A=12,300