help me with this

1. Compute the following sums (6 points). a. 2+4+6+1024 b. 3+9+27+320 c. i=5n+31 d. i=5n+3i e. i=3n2i+2 f. i=2nj=3n(i+1)(j+2) 2. Express the order of growth using notation. The final formula should be as simple as possible (4points). a. 3n3(i3+3)3 b. 2023nlgi1024