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 = ?
9,578
To find the plane's altitude when m = 12, we need to substitute the value of m into the equation and solve for a.
Given the equation: a = 22,000 - 800m
Substituting m = 12 into the equation:
a = 22,000 - 800(12)
Calculating the value inside the parentheses:
a = 22,000 - 9,600
Performing the subtraction:
a = 12,400
Therefore, when m = 12, the plane's altitude is 12,400 feet.