Compute for the amount of lime needed using regression analysis. 10 y = 3.1594x + 4.001 PH of Sandy Soil 0 0.2 0.4 0.6 8'0 1.2 1.4 1.6 Amount of CaCO3 (mg) Sandy Soil y = 3.1594x + 4.001 1 hectare = 2,000,000 kg CaCO3 = 6.5 y = 3.1594x + 4.001 6.5 = 3.1594x + 4.001 x = 6.5 - 3.1594 / 4.001 x = 0.82 mg CaCO3 0.82 mg CaCO3 = 0.00082 g CaCO3 (0.00082 g CaCO3 / 20 g soil ) = x ( 2,000,000 kg soil ) X = (0.00082 g ) (2,000,000 kg) / 20 g x = 82 kg It means that in sandy soil, 82 kg of CaCO3 is needed per hectare to