Answer:
It will take
to fall

Explanation:
We have the data of the function that represents the falling. Let's call this function ''f''. The function ''f'' depends of the time variable ''t''. We can write the function as :

In the function, if we replace the variable ''t'' by any value in seconds it will return the value in feets of how much the average-sized man has fallen for that value of ''t''.
In order to find how long it will take him to fall
, we need to replace
by 142 and find the value of ''t'' that satisfies the equation.
Working with the function :




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We can't forget in the last step that the unit for time in the function is seconds.
The correct answer is
