In Hillsboro, the use of landlines has been declining at a rate of 10% every year. If there are 86,652 landlines this year, how many will there be in 12 years?

If necessary, round your answer to the nearest whole number.

The number of landlines in 12 years will be 86652 * (1 - 0.10) ^ 12 = <<86652*(1-0.10)^12=35202>>35,202. Answer: \boxed{35,202}.