The number of domain hosts grew according to the rule Next year's number = 1.43 x Current number

a. Find the percentage increase each year, and explain why the number of hosts is an exponential function of time.

b. The number of domain hosts in 1995 was 8.2 million. Find an exponential formula that gives the number of hosts in terms of the time, in years since 1995.

c. What number of internet domains does your formula in part b give for 2005? Round your answer to the nearest million.