Question 757544
Population(t) = Population(0) * 0.94^t (t = years)
  6000 = 12500 * 0.94^t
  6000/12500 = 0.94^t
     0.48 = 0.94^t
  loge 0.48 = t loge 0.94
        t = loge 0.48/ loge 0.94
        t = 11.86 years  => 12years

  Population(t) = Population(0) * 0.94^t
                = 12500 * 0.94^12
                = 5949.
Hope this helps.
:-)