An airplane is at 32,000 ft above sea level and descends at an average rate of 1,000 ft per minute. How many minutes will it tak e the plane to land 3,000 ft above sea level?
2 answers:
29 minutes- at a rate of 1,000 feet a minute, it would take 32 minutes to reach sea level (32,000/1000=32)but if you subtract 3000 from 32000 to remain 3000 feet above sea level, you have 29000 feet to descend which will take 29 minutes
Let
x-------> the time in minutes
y-------> the height of the airplane above sea level in feet
we know that
-------> equation
In this problem
For
<u>Find the value of x </u>
Substitute the value of y in the equation and solve for x
therefore
<u>the answer is</u>
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