Answer:
The given situation is
A plane ascended 34,200 feet.
Now, integers are numbers that can be written without a fractional component. In other words, they aren't decimals. Also, we could define them as number which are elements of a set that contains their opposite number and the zero, that is, there are negative and positive numbers.
So, the given numner 34,200, as an integer is +34,200, which indicates that the plane is ascending.
Therefore, the statement can be rewritten as: a plane traveled +34,200 feet. Which also indicates that the plane has ascended.