The number of pages in the IRS Tax Code has increased from 400 pages in 1913 to

Question:

The number of pages in the IRS Tax Code has increased from 400 pages in 1913 to 70,320 pages in 2009 (Source: IRS). The increase can be modeled by the exponential function
T(x) = 400 (1.055)x
Where x is the number of years since 1913 use this function to estimate the number of pages in the tax code for 1950, for 1990, and for 2000 round to the nearest one