What is the value of house acquired in 2000 that valued at $140,000 in 2019 with an average annual appreciation rate of 1.6%

Value = P(1 +r)^n

where n is the number of years...
Your decimal for 1.6% = 0.016
and the power of n is the power of 19 as there are 19 years that the house has been owned.
P = principal value of the house... the 140,000