Which equation represents the partial sum of the geometric series?
125 + 25 + 5 + 1
25 + 5 + 1 + one-fifth
1 + one-fifth + StartFraction 1 Over 25 EndFraction + StartFraction 1 Over 125 EndFraction
StartFraction 1 Over 125 EndFraction + one-fifth + 5 + 125