h=41=4 W 2"\" step 3'\"d step 4'\" step [mat answer n k 21 Z: Z E h = \"=4 j=T \"=8 rs; step 2'\" step 3"\": step 4'11 step nal answer Show the first few steps (as indicated below) and the final answer in evaluating the given summation. Final answers must be in its simplest whole or rational number, or expression. 20 j E Z (2k + 3) = j=5 k=0 first step and slep = final answer 2n+3 E (n + 5k) 3 = k=0 first step and slep = final