CURRENT OBJECTIVE Use the washer method to find the volume of a solid of revolution around the x-axis Question Let R represent the region bounded above by the graph of f(x) = 4x + 1, below by the graph of g(x) =, and on each side by x = 1 and x = 4. What is the volume of the solid of revolution obtained by rotating R about the x-axis? Enter an exact value in terms of .