Can you give me maximum and minimum dosage

For a dosage of x cubic centimeters (cc) of a certain drug, the resulting blood pressure B is approximated by the function below. Find the maximum blood pressure and the dosage at which it occurs. B(x) = 320x2 - 256033, 0 s xs 0.12 -E)-----m" The maximum is obtained for a dosage of [1. (Round to two decimal places as needed.)