Evaluate the following expressions. 13 9 7 6 a. E b. > (3k + 1) c. k- d. X (3+ n ) k-1 k =1 k-1 n=1 4 4 9 4 5m + 5 e. E 1. _ (3)-7) g. > k(5k + 7) h. > sin 7 2 m=1 1 =1 k -1 13 a. k= (Type an integer or a simplified fraction.) K = 1