Use a change of variables or the accompanying table to evaluate the following definite integral. dx 0 49x

Use a change of variables or the accompanying table to evaluate the following definite integral. 8 7 dx 4gx2 + 64 Determine a change of variables from x to u Choose the correct answer below. u=7x o B. u=49x +64 2 u x 2 u = 4gx Write the integral in terms of u. 8 7 dx 4gx + 64 Evaluate the integral 8 7 dx 4gx + 64 (Type an exact answer.)