Obviously does not pass vertical line test.
since doesn't pass is not a function
the horizontal line test has nothing to do with it being a function
Answer:
The work done is 4386.6 J.
Step-by-step explanation:
The work is given by:

Where:
F: is the applied force = 42 pounds
d: is the displacement = 85 feet
Since the force is applied at an angle (θ) of 25° with the horizontal we have:


Therefore, the work done is 4386.6 J.
I hope it helps you!
Answer:
14.3 feet
Step-by-step explanation:
Let the height of the tree = x feet.
It is given that the horizontal distance from the base of tree = 10 feet and the angle of elevation to the nest is 55°.
So, we get the following figure.
As, we are obtaining a right angled triangle.
Using the trigonometric form for the angles of a right angled triangle, we get,

i.e. 
i.e. 
i.e. 
i.e. 
Hence, the height of the tree is 14.3 feet.