1                            -3                                 11
(a) Suppose ∫     f(x)dx= 7 and∫   f(x)dx= −5. Evaluate ∫    3f(x)dx.
                     -3                          11                                 1
                       e^x
(b) Find d/dx ∫      (t^3+4)dt
                      0
                    2
(c) Evaluate ∫  3x/(3x+3)dx using u-substitution.
                    0