QUESTION 9 (8 points) Use a change of variables to evaluate the following definite integral. S 6x dx (3x+4) a. (1 pt) Determine a change of variables from to . Choose the correct answer below for " A. u=3x²+4 B. u=6xdx C. =(3x²+4)³ D. =3x² b. (1 pt)Find du du = c. (3 pts)Write the integral in terms of with new integration limits. 6x (3x+4) dx=(----)du d. (3 pts)Evaluate the integral. dx= (3x+4) (Type an exact answer, no decimlas) For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).

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