the population of a country decreases by 4% every year.

Question

  if the population is 8 million what will it be after 3 year.

Answer 1

A yearly decrease of 4% means that at the end of each year, there remains 0.96 times the amount at the start of the year.

 

P(t) = P₀ (0.96)^t

 

P₀ = 8,000,000

t = 3

 

P(3) = 8,000,000 (0.96)³ = ?