3n 2 5n 6 July 8, 2019 16 32 64 128 3n 2 5n 6 9 N 2 3n 4 5n 6 21 N 2 3n 2 5n 6 21 N 2 3n 4 5n 6 N 2 3n 4 5n 6 21 explain 25 6 3n 2 5n N 2 3n 4 5n 6 28 3n 2 1.4 n 5n 2 6.4 N 2 3n 4 5n 6 20 3 -5n+2n