Gavin wrote the equation p = StartFraction 3 (s + 100) Over 4 EndFraction to represent p, the profit he makes from s sales in his lawn-mowing business. Which equation is solved for s? s = StartFraction p minus 100 Over 3 EndFraction s = StartFraction 4 p minus 300 Over 3 EndFraction s = StartFraction 4 p Over 300 EndFraction s = StartFraction 400 p Over 3 EndFraction