We can say that 14.7% of households had cordless phone in 2000.
Solution:
Given that between 2000 and 2010 the percentage of households with cordless phone increased from 14.7% to 84%.
Initial value of the year = 2000
Final value of the year = 2010
Initial value of cordless phone percentage = 14.7%
Final value of cordless phone percentage = 84%.
So the initial values in 2000 is 14.7%
Hence we can say that 14.7% of household had cordless phone in 2000.