The area of the region bounded by the curves f(x) = x + 1 and g(x) = 2x + 1 is best described by: O a. [(x3 + 1) - (2x + 1)]dr O b. , [(2x + 1) -(x3 + 1)]dr O c ([(2r+1) -(x3 + 1)]de O d. [(x] + 1) -(2x + 1)]drThe region bounded by the curve y = ', the e - aris, and the line c = 2 is revolved about the y - axis. What is the volume of the solid generated? 5 7 CU. units O b. 87 cu. units O c. 1287 cu. units O d. 16//2 TT CU. Units 5