Resposta:
n = (log 7)/(log 1,1)
Explicação passo-a-passo:
5000 = 35000/(1 + 0,1)^n
5 = 35/(1,1)^n
5 . (1,1)^n = 35
(1,1)^n = 35/5
(1,1)^n = 7
log (1,1)^n = log 7
n . log (1,1) = log 7
