Use geometry (not Riemann sums) to evaluate the definite integral. Sketch the graph of the integrand, show the region in question, and interpret your result. (2x+6)dx -5 Choose the correct graph below. ○ A. B. C ○ C. D. Q The value of the definite integral (2x+6)dx as determined by the area under the graph of the integrand is (Simplify your answer.) -5 ♫