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Answer:
And for this case we can use the last equation when we want the altitude and we want to know how many minutes the plane was at air after the takeoff
Step-by-step explanation:
For this case we have the following function given :
Where:
A = feet of a plane and t = minutes after takeoff
And we are interested to solve t in terms of A
We can begin subtracting 2000 in both sides of the equation and we got:
Now we can divide both sides by 7000 and we got:
Now we can apply exponential in both sides of the equation and we got:
And now we can divide both sides by 0.2 and we got:
And for this case we can use the last equation when we want the altitude and we want to know how many minutes the plane was at air after the takeoff