In july 2005 internet was connected by the global network of about 353.2 million host computers. Number of host computers has been increasing approximately exponentially and was about 36.7 million in 1998.
i. Determine the formula for number (N) of host computers as the exponential function of t, number of years since 1998 in the form N = aekt
ii. at what continuous annual rate N increases
iii. Determine the doubling time