Tolong bantu no.3 ! please bantu...

Bab Bunga Majemuk
Matematika SMA Kelas X

Mn = M (1 + i)ⁿ 
35.246.833 = 20.000.000 (1 + 0,12)ⁿ
1,12ⁿ = 35.246.833/20.000.000
n = 1,12^log (35.246.833 / 20.000.000)
n = (log 35.246.833 - log 20.000.000) / log 1,12
n = (log (10⁶ x 35,2468) - log (10⁶ x 20)) / 0,0492
n = (6 + 1,547 - 6 - 1,301) / 0,0492
n = 0,246 / 0,0492
n = 5 tahun 

jawabannya D