The atmospheric pressure, in millibars, at a given altitude , in feet, above sea level can be approximated by the function defined by


f(x)=1038(1.000040852)

for values of between 0 and 32,800. What does the y-intercept represent?
A.
the number of feet needed for the atmospheric pressure to reach zero millibars

B.
the rate at which the atmospheric pressure is dropping per foot of elevation

C.
the atmospheric pressure at sea level

D.
the atmospheric pressure at 1,038 feet above see level