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The altitude of a plane as it begins to descend is shown by the linear equation
a = 22,000 – 800m, where a is the plane’s altitude, in feet, and m is minutes.
What is the plane’s altitude when m = 12
ft
a = 22,000 - 800*12 =
12400
To find the plane's altitude when m = 12, we need to substitute the value of m into the equation and solve for a.
The equation given is a = 22,000 - 800m, where a represents the altitude and m represents the minutes.
Substituting m = 12 into the equation gives:
a = 22,000 - 800(12)
Now, we will calculate the value of a by performing the multiplication and subtraction:
a = 22,000 - 9,600
a = 12,400 ft
Therefore, when m = 12, the plane's altitude is 12,400 ft.