a.
The domain of the function.
a.

Answer to Problem 47CR
The domain of the function is
Explanation of Solution
Given information:
The time
Calculation:
The given function is
The function is defined when,
And, since, height cannot be less than 0 that is negative. Therefore, the domain of the function is
Hence,
The domain of the function is
b.
To identify: Any asymptote and graph the function
b.

Answer to Problem 47CR
The vertical asymptote is at
Explanation of Solution
Given information:
The time
Calculation:
The graph of the function is drawn below:
From the graph the asymptotes is the vertical asymptote at
Hence,
The vertical asymptote is at
c.
To find: The time required to further increase its altitude when the plane approaches its absolute ceiling.
c.

Answer to Problem 47CR
As the plane approaches its ceiling, the time required to further increase its altitude further increases.
Explanation of Solution
Given information:
The time
Calculation:
For the function
As the value of h approaches its ceiling that is 18000. The value
Hence,
As the plane approaches its ceiling, the time required to further increase its altitude further increases.
d.
To find: The amount of time it takes for the plane to climb to an altitude of 4000 feet.
d.

Answer to Problem 47CR
Time required is 5.46 minutes.
Explanation of Solution
Given information:
The time
Calculation:
To find the time required for the plane to climb to an altitude of 4000 feet.
Substitute
Hence,
Time required is 5.46 minutes.
Chapter 3 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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