Atmospheric pressure (in millibars) at a given altitude x, in meters, can be approximated by the exponential function for values of x between 0 and 10,000.
Because the base is greater than 1 and the coefficient of x in the exponent is negative, function values decrease as x increases. This means that as altitude increases, atmospheric pressure decreases. According to this function, what is the pressure at ground level, that is when x = 0?
The pressure is ...... millibars
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