A) Find the volume of the solid S formed by rotating the region under the curve f(x) = ( + 1)^2, the x-axis, and the lines x = 0 and x = 2. Write formula down. Answer with the exact solution (NOT an approximation B) A patient is injected with a drug, and t hours later, the concentration of the drug remaining in the patient's bloodstream is given by C(t) = 0.3t / (t^2 + 16) ^1/2 mg/cm^3 What is the average concentration of the drug the first 3 hours after the injection? Write the formula down. Explain your work and answer with a complete sentence. C) Find the area A of the region bounded by the function f(x) = x - I, the x-axis, the y-axis and the vertical line x=2